In This Review

Overview

Looking for the best female libido enhancers? Here is a list of female libido supplements. We are confident that these products will help you improve both your sex life and your mood. Sexual desire fluctuates; sometimes, your libido is high while there are also instances when you have no desire to have sex whatsoever. Low libido can be quite frustrating for women and their partners. It’s perfectly normal for sexual desire to decline as you age, but a full array of biological, emotional, and environmental factors contributes to it as well.

This doesn’t have to be so depressing, particularly because the problem is entirely treatable, and there are several ways to improve your libido and sex life.

Why Trust Consumer Health Digest?

The Consumer Health Digest team is a group of health specialists, sexologists, and certified sex coaches who regularly work to make the best advice available. To examine our essay, we also requested Dr. Stacy Friedman, P.A., a clinical sexologist and certified sex coach from South Florida, USA. We also conducted our own research with our team, tried goods, and then assessed each one based on online reviews to find the best libido supplements for women available.

Which Female Sexual Enhancement Pills Really Work?

For women who seek natural and safe treatments for their sexual issues, dietary supplements pose as the perfect solution. These products are usually made of natural ingredients with a low risk of side effects.

The problem occurs when you want to purchase an top rated female libido enhancer and discover hundreds of these products are available. You feel confused and nervous because you don’t want to end up with the wrong supplement. To put a stop to those scenarios and ensure you get a useful product, we have evaluated female libido enhancers and reviewed the best products on the market this year.

Our Top Picks

11 Best Female Libido Booster of 2023

If you’re looking for the best Female Libido Enhancers goods, here’s a list of the top 11 libido supplements for women in 2023:

HerSolution | Best Natural Women’s Libido Supplement

HerSolution

HerSolution

(4.8/5) 220 REVIEWS
$69.95$59.95OFFICIAL WEBSITE
PRODUCT HIGHLIGHTS
  • High-Quality Ingredients
  • Risk-free Trial
  • Affordable Price
  • Powerful Testimonials
  • Reputable History
  • Form: Tablets
  • Quantity: 30 Tablets
  • Dosage: One pills daily
  • Ingredients: Niacin, Gingko Biloba, Hops Extract, DHEA, Red Raspberry Leaf.
  • Usage: Boost Low Libido in Females
  • Safety: 67 Days Return, Free USA Shipping.
  • Refund Policy: 67-Day
  • Company Info: Leading Edge Health, c/o 100 Fidelitone Way, Elizabethton, TN 37643, United States of America.

These are the real deal.

“My sex drive has increased tremendously! I’m horny all the time. My boyfriend and I have sex at least twice day now.” – Southern Girl

READ FULL REVIEWS

HerSolution is a sexual pills for females that is intended to increase female libido. It is made with effective ingredients that include minerals, herbs, and aphrodisiacs that work together to improve your sexual drive.

According to the National Library of Medicine Niacin, or vitamin B3, is necessary for orgasms because it facilitates and accelerates blood flow. It also aids the adrenal glands in the production of sex hormones.

HerSolution is an outstanding solution to low libido among other supplements as it helps you restore lost sexual desire and pleasure. It is made up of just natural elements that enable it achieve its goals. They contain herbs and other components that help to revitalise your sexual wellness. You should think about it if you’ve lost your passion for sex and want to rekindle it so you can appreciate your sexual intimacy.

Check For Best Deal

Provestra | Best For Libido and Menopause Support

Provestra

Provestra

(4.8/5) 196 REVIEWS
$79.95$59.95OFFICIAL WEBSITE
PRODUCT HIGHLIGHTS
  • Increase Sexual Satisfaction
  • Full Body Arousal
  • Better Positive Mood
  • Reduce Hot Flashes
  • No Harsh Chemicals
  • Form: Tablets
  • Quantity: 30 Tablets
  • Dosage: One pill daily
  • Ingredients: L-Arginine, Damiana Leaf, Indole-3-Carbinol, Theobromine.
  • Usage: Female Libido Enhancer
  • Safety: 67 Days Return, Free USA Shipping, 24/7 Support
  • Refund Policy: 67-Day
  • Company Info: Leading Edge Health Ltd (171 Arch. Makariou III Ave, Vanezis Business Center, Office 401, 3027 Limassol, Cyprus) Tel: +1-604-677-3533

Good price for quanity.

” I just can’t believe how a pill can make her so wet but thank you because it has changed our sexual relationship.” – Howard Davis

READ FULL REVIEWS

Provestra is a sexual enhancement pill for women that stimulates sex drive, vaginal lubrication, and blood flow. Provestra is an all-natural female sexual enhancement supplement that stimulates sex drive, vaginal lubrication, and blood flow. This supplement was also designed to address female sexual dysfunctions in order to improve overall sexual health and performance.

According to the Medical News Today L–arginine is an amino acid that helps the body to build proteins. It helps to dilate blood vessels to allow smooth blood flow.

Provestra is a powerful sexual enhancement supplement for women specially designed for women use. Provestra is backed by natural and strong chemicals that work together to provide a plethora of sex benefits. It promises to stimulate sexual desire and enhance deeply intense sexual sensations, resulting in maximum performance.

Check For Best Deal

Vigorelle | Best Female Enhancement Cream

Vigorelle

Vigorelle

(4.8/5) 190 REVIEWS
$69.95$59.95OFFICIAL WEBSITE
PRODUCT HIGHLIGHTS
  • Increased Lubrication Properties
  • Longer Lasting Sensation
  • Relieves Vaginal Dryness
  • Powerful Testimonials
  • Reputable Brand
  • Form: Cream
  • Quantity: 30 ml
  • Dosage: Apply this cream beneath the clitoris & smoothly rub it.
  • Ingredients: L-Arginine, Peppermint Oil
  • Usage: Female Enhancement Cream
  • Safety: 67 Days Return, Free USA Shipping, 100% Secured Payments.
  • Refund Policy: 67-Day
  • Company Info: Leading Edge Marketing Ltd (171 Arch. Makariou III Ave, Vanezis Business Center, Office 401, 3027 Limassol, Cyprus) Tel: +1-604-677-5365

Good price for quanity.

” I just can’t believe how a pill can make her so wet but thank you because it has changed our sexual relationship.” – Howard Davis

READ FULL REVIEWS

Vigorelle is a natural female enhancement cream that is intended for ladies who have lost their libido and sexual activities. It functions as a lubricant to enhance sexual sensations and orgasms.

According to the National Center for Complementary and Integrative Health Peppermint Oil is designed to work by increasing healthy and natural lubrication, which prevents vaginal dryness and also reduces anxiety.

Vigorelle is a natural product that applied to enhance sexual performance in women. Regular use of this cream may result in more orgasms and enhanced sexual experiences. The purpose of Vigorelle cream is to improve female sexual performance. Vigorelle is one of the best sexual enhancer for women it also causes a flow of blood toward the vaginal region. Women who want to improve the quality of their sex life should use this cream. It usually results in long-term benefits.

Check For Best Deal

Femgasm | Best Instant Libido Booster for Women

Femgasm

Femgasm

(3.3/5) 112 REVIEWS
$49.99AMAZON
PRODUCT SPECIFICATIONS
  • Form: Pills
  • Quantity: 60 Pills
  • Dosage: 1 Pill per day.
  • Ingredients: Tribulus Terrestris, Damiana, Pueraria Mirifica, Horny Goat Weed.
  • Usage: Female Libido Enhancer
  • Safety: All Natural Ingredients, Direct From the Manufacturer
  • Refund Policy: Standard Amazon Return Policy
  • Company Info: PO BOX 416 Rangiora, 7440, New Zealand Tel: (210) 807-4404

Right on!

“I’ve only been taking this product for a few days, but I’m already feeling like I did in my teens, and it feels amazing. I’m feeling more relaxed, more like myself. I’m up for anything once more. Because of worry, ptsd, stress, and other medical issues, my “unit” was always on the dry side, even when I was aroused. How so, you could ask? I really have no idea, but that was the case, and this product has gotten me back on track, and I’m feeling like myself again. Thanx. Yes, I would suggest Femgasm.” – Carmen Otto

Femgasm is a libido supplements for women that is specifically intended to increase the intensity and length of orgasms. Women of all ages can take supplements, and they claim they can help with libido issues. Femgasm is a potent herbal extract blend that boosts libido by increasing blood flow to your sex organs, increases sensitivity, and allows you to become wet whenever you participate in sexual foreplay.
Read Reviews

Durex Play | Best Water Based Lubes & Gels

Durex Play

Durex Play

(3.6/5) 109 REVIEWS
$26.21AMAZON
$22.68WALMART
PRODUCT SPECIFICATIONS
  • Form: Cream
  • Quantity: 30 ml
  • Dosage: Apply this cream beneath the clitoris & smoothly rub it.
  • Ingredients: L-Arginine, Peppermint Oil, Ylang Ylang, Gurana, Menthol
  • Usage: Female Enhancement Cream
  • Safety: Totally Sugar-Free.
  • Refund Policy: Standard Amazon Return Policy
  • Company Info: 5th Floor, Gulf Adiba’, Plot Number 272, Udyog Vihar, Phase – II, Gurugram, Haryana – 122008.
    Mail: [email protected]

Does what it needs to do well!

“Good product but that’s expected with a good brand. One of my favorites lubes! The ylang ylang adds something special that adds not only a pleasant smell but extra sensation. Lasts a long time and doesn’t go sticky or dry. Can smell the cherry but isn’t overpowering.
Good quality product Will buy again!” – Lee288

Durex play lubricants are lubricants that are water-based and can be used during sexual activity. When a woman is horny, she may use little vaginal lubricant to allow for enjoyable intercourse. Vaginal lubrication is influenced by a number of factors, including hormones, and it is not always predictable.

Durex play lubricants are used when vaginal lubrication is insufficient or when a lady is using a vibrator. It can be used in conjunction with a condom. Durex play lubricants are condom compatible. They are also non-sticky and non-greasy. They can be utilised to spice things up for a more pleasurable experience when vaginal lubrication is missing.Read Reviews

High-T Woman | Best Natural Estrogen Booster

High-T-Women

High-T-Women

(3.5/5) 116 REVIEWS
$44.95AMAZON
$44.99WALMART
PRODUCT SPECIFICATIONS
  • Form: Capsules
  • Quantity: 60 Capsules
  • Dosage: 2 Capsules Per Day
  • Ingredients: Zinc, Proprietary Blend of Cocao Extract, Maca Root Extract
  • Usage: Libido Boosting Formula
  • Safety: 100% NO-HASSLE Manufacture Guarantee, All Natural.
  • Refund Policy: 30-Day
  • Company Info: Mail: [email protected], Tel:
    801-441-6400

Great Sex

“I am 27, suffer from manic depressive bipolar disorder and it interferes with my moods and libido. After a week use of High T my sex drive increased and I have much more energy. This product may not work for everyone but I am ecstatic High T works for my body. I am satisfied with this product” – Kristina B

High T Ladies is an all-natural female sexual enhancement pill for women of all ages. The product has been clinically proven to boost libido, sex drive, sexual vigour, and sexual vitality, as well as overall body stamina and energy. Although it may be difficult to believe the effects of this supplement, their ingredient list has demonstrated to have some effect on feminine difficulties.

High T Women contains popular libido boosting components that contribute to its efficacy. It also contains components that have been shown to help with sadness and stress. Because the body’s strength has switched from other difficulties to intimacy as a result of these combinations, the product leaves the body wanting for sex.Read Reviews

HerSolution Gel | Best Female Libido Lubricant

Hersolution Gel

HerSolution Gel

(4.6/5) 182 REVIEWS
$59.95AMAZON
$59.95WALMART
PRODUCT SPECIFICATIONS
  • Form: Gel
  • Quantity: 60 ml
  • Dosage: Apply this cream beneath the clitoris & smoothly rub it.
  • Ingredients: L-Arginine, Natural Botanical Essences, Aloe Vera Extract, Coca Butter
  • Usage: Female Libido Enhancer
  • Safety: 100% Doctor Approved, With No Known Side Effects
  • Refund Policy: 67 Days Return
  • Company Info: Leading Edge Health, c/o 100 Fidelitone Way, Elizabethton, TN 37643, United States of America. Tel: +1-866-621-6884

It really does work!

“I realize some people feel this product does not work but if applied a little more liberally than directed, maybe twice as much product, there is a noticeable difference. It is only noticeable with direct contact to use with some kind of action. You can use your own imagination how this might be. If applying without this contact like reading a book waiting for something interesting to happen, it won’t.I did not give it five stars because it did not work while reading.” – Estee

HerSolution is the best female stimulation product unique combination of natural substances that help increase female energy, sex drive, sexual feeling, and arousal. The principal activity of the product is as an arousal booster. Several consumer reviews guarantee readers that it works as stated. They include getting rid of dryness, increasing sex drive, and creating more powerful sensations. HerSolutionGel lubricates and stimulates blood flow in a woman’s intimate areas for maximum arousal. The company suggests using this formula for about a week to see long-term results.Official Website

Moon Juice Sex Dust | Best Organic Female Libido Supplement

moon juice sex dust

Moon Juice Sex Dust

(3.2/5) 112 REVIEWS
$59.95AMAZON
PRODUCT SPECIFICATIONS
  • Form: Powder
  • Quantity: 42.5gm
  • Dosage: Blend 1 tsp of this pairs well with coffee, chocolate, tea & milk; or add to any smoothie.
  • Ingredients: Organic Cacao Powder, Shilajit Extract, Shatavari Root Extract, Organic Epimedium (Horny Goat Weed) Leaf Extract, Organic Maca Root Extract,
  • Usage: Female Libido Enhancer
  • Safety: 100% Organic Ingredients
  • Refund Policy: 45-day money back guarantee
  • Company Info: Mail: [email protected]

Love this product!

“I started to use this as a supplement to help with my low libido due to other medications and I am happy to say that is has worked! I am even having discharge again, which I haven’t had in years due to birth control! I will reorder for sure!” – Hannah J.

Sex Dust is an energising blend of adaptogens and herbs that target stress and promote healthy hormonal balance, libido, and creative energy. Each Moon Dust combination contains substances that are intended to address a variety of issues, including stress, energy, mental cognition, blood sugar balance, cardiovascular health, and healthy weight control.
Official Website

M Factor Goddess | Best For Women’s Sexual Health

m factor goddess

M Factor Goddess

(3.7/5) 112 REVIEWS
PRODUCT SPECIFICATIONS
  • Form: Capsule
  • Quantity: 120 Capsules
  • Dosage: 2 Capsules Daily
  • Ingredients: Ascorbic acid, Zinc oxide, Cholecalciferol D-3, Palmitate and Acetate
  • Usage: Female Libido Enhancer
  • Safety: 100% Satisfaction Guaranted by Manufacturer
  • Refund Policy: 30 Days Money-Back Guarantee
  • Company Info: Tel: +1 800 409 9732

Great Product!

“I believe this is the best multi vitamin I have ever used. I feel more energized, and I even feel like my mood is improved. Overall, I’m feeling healthier using this product. The capsules do not have an odor like others I’ve used” – Cherie T.

M-Factor Goddess provides all of the necessary micronutrients and vital amino acids to support the immune system. It contains a superfood antioxidant blend to help prevent ageing, natural green tea to retain vitality, and is designed specifically for ladies. M-Factor Goddess Super-food Antioxidant Complex is a potent combination of superfoods designed to protect your body from oxidative stress, which can cause premature ageing.
Official Website

Inno Drive For Her | Best For Supporting Healthy Hormone Levels

inno drive for her

Inno Drive For Her

(3.6/5) 112 REVIEWS
PRODUCT SPECIFICATIONS
  • Form: Capsule
  • Quantity: 30 Capsules
  • Dosage: 2 Capsules Daily
  • Ingredients: Ashwagandha, Epimedium, Tribulus, Damiana, Maca, Nitric Oxide
  • Usage: Female Libido Enhancer
  • Safety: ZERO Artificial Ingredients, Fillers or Harmful Additives
  • Refund Policy: 30-Day Money-Back Guarantee
  • Company Info: Mail: [email protected]

So far so good

“It sure gets the system going !!! First I thought I had a tummy bug but then the penny dropped that it was the capsules working. Feeling so much less bloated. So will definitely continue taking them” – Dana

Inno Drive For Her was created specifically for women to not only support a healthy drive, but also to fully energise your entire body so that you feel, perform, and look your best every day. This supplement is a female-focused blend of natural herbs and vitamins that help balance the hormones that work together to allow you to have the urge to have sex and make sex feel better.
Official Website

Elm & Rye Sex Performance Gummies | Best Sex Pills For Women

Elm & Rye Sex Performance Gummies

Elm & Rye Sex Performance Gummies

(3.8/5) 112 REVIEWS
PRODUCT SPECIFICATIONS
  • Form: Gummies
  • Quantity: 60 Gummies
  • Dosage: 2 Gummies Daily
  • Ingredients: Zinc, Muira Puama, Tongkat Ali Root L-Arginine, Siberian Ginseng, Maca
  • Usage: Female Libido Enhancer
  • Safety: Pure Quality and Lab Tested.
  • Refund Policy: N/A
  • Company Info: Mail: [email protected]

You have to try it!

“Since taking Elm & Rye Sex Performance Gummies my husband and I have had the best sex of our lives! I can’t imagine any other product working better than Lyriana!” – Megan

Elm and Rye’s sexual performance booster is a potent blend of natural substances created to be the most effective libido gummies for improving and supporting sexual performance. Elm and Rye’s sex performance enhancer is a daily supplement developed by their research team to be the most effective libido gummy for increasing stamina and sex drive.
Official Website

How to Treat Low Sex Drive in Women?

As mentioned above, libido decline is a treatable problem which is good news for all women out there. For example, a study whose findings were published in the Annals of Behavioral Medicine[1] showed that exercise has a tremendous potential to improve arousal in women.

It comes as no surprise especially because physical activity boosts the release of feel-good chemicals and relieves stress.

Treat Low Sex Drive in women

Others ways of treating low libido in women include:

  • Get enough sleep – Sleep deprivation increases levels of stress hormone cortisol and decreases your energy, both of which affect the libido
  • De-stress – Find a unique way to relax and manage stress. As much as we try to avoid stressful situations, that’s not always possible, which is why doing something that makes you feel calm is practical
  • Communicate with your partner – In most cases, unresolved problems with significant others can also affect the sexual desire. You should feel comfortable to discuss everything with your spouse, including your sex life

You can also:

  • Set aside some time for intimacy[2]
  • Spice up your sex life (sometimes monotony can be a libido killer as well)
  • Use lubricant
  • Ditch bad habits such as smoking or alcohol consumption

You can also consult your healthcare provider and see what he/she recommends for a libido boost. Most women opt for more natural solutions that dietary supplements provide, which is why they’re quite popular “tools” for the treatment of low sex drive in women.

What Do Female Libido Boosters Do?

Female libido booster work to increase the sex drive in women by providing a major boost of blood to the genital areas.

This is used to help women who have trouble being able to have a orgasm, as well as people who have a lack of desire when having sex with their partner. This is also a great confidence boost for when in bed, being able to feel in control of your body.

Boost Libido

Do Female Libido Enhancers Boost Libido?

The first question that most women have regarding dietary supplements is, “are they effective?” It’s important to bear in mind that not all products are created equal; they have different ingredients and formulas. While some of them are incredibly helpful, others aren’t.

For instance, researchers at Stanford University discovered that the supplement they used for the study has a tremendous potential to improve sexual desire and overall satisfaction in women.

As you can see, female enhancement supplements work, you have to make wise decisions and purchase the right product.

These supplements work to restore hormonal balance, boost energy levels, and stimulate blood flow throughout your organism, including the genital area.

What Do You Need to Look While Choosing Supplements For Women’s Libido?

Sexual pills for females can be of immense help for all women suffering from low sexual desire. That said, to improve your sex life with these products, you have to know how to choose them properly.

Libido Enhancers

Here are some tips that you should consider when buying these supplements:

  • Manufacturer – If the brand behind the product isn’t reliable, then you shouldn’t consider it. It’s important to do some research on the company itself and read about other products they have under their belt to determine whether they can be trusted
  • Reviews – Do you want to buy a product before finding out whether it worked for someone else? Don’t focus only on testimonials on official websites because (let’s face it); they can be fake. Instead, you should look for reviews on different internet sources and check whether they’re positive or negative
  • Ingredients – The FDA doesn’t regulate dietary supplements, and they aren’t obliged to disclose all parts of the formula. It’s always a nice touch when a manufacturer provides a detailed list of ingredients and their roles
  • Money-back guarantee – Reliable companies always offer money-back guarantee in case you’re not satisfied with their product
  • Free trials – Most manufacturers offer free trials, but you should be careful. On some websites, ordering a free trial enrolls you into an automatic shipping program which can be difficult to get out from
  • Claims – Some products have outrageous and “too good to be true” claims, but no evidence to support them. Always take these claims with a pinch of salt.

Product Comparison

Here’s a short comparison of our top recommendations to make your decision easier:

HerSolution Provestra Vigorelle Femgasm Durex Play
Rating
Cost $59.95 $59.95 $59.95 $49.99 $26.21
Dosage 1 Pills daily 1 Pills daily Apply once daily 1 Pills daily Apply once daily
Usage Boost Low Libido in Females Female Libido Enhancer Female Enhancement Cream Female Libido Enhancer Female Enhancement Cream
Return Policy 67-Days 67-Days 67-Days N/A N/A
Pros Increases your energy & enhances sexual pleasure Boosts libido and sex drive Enhances sensations & increasing orgasms Made from natural ingredients Easy to use and effective
Review Increase female libido Affordable Price Longer Lasting Sensation Less Effective Results into Side Effects
Shop Now

Frequently Asked Questions

Q. What increases female libido fast?

A: Natural Foods for Sexual Enhancement Hormones are triggered by foods like oysters, bananas, chocolate, hazelnuts, and carob, which boost sexual desire. Consuming these items in moderation on a regular basis has a significant impact on enhancing female libido.

Q. What supplements can boost a woman’s libido?

A: Best supplements for female libido include Vitamin B3, Vitamin D, Vitamin E, Dehydroepiandrosterone[3], Zinc, Omega-3 fatty acids, L-arginine[4], L-carnitine, Ashwagandha, Maca root[5] this are some recommended ingredients for female libido enhancers products.

Q. What you need to know before buying female libido product?

A: Safety is very important when it comes to taking dietary supplements. One way to make sure that the product you purchase is safe is by ensuring that the product is free from harsh chemicals and other harmful ingredients that can cause adverse effects. Carefully check the label and look for clinical studies proving that they are really effective and safe.

Q. Do female libido enhancer they Really Work?

A: Female libido and sex desire are intended to be enhanced by female enhancement tablets. The majority of these pills contain ingredients that have been shown to stimulate women’s sex drives, including herbs, other natural extracts, and naturally occurring chemicals.

The study, directed by Dr. Mary Lake Polan, chair of Stanford University’s department of gynecology/obstetrics, discovered that women aged 22 to 73 who lacked sexual desire reported increased satisfaction with their sex life after taking a female enhancement supplement for four weeks.

Conclusion

You don’t have to stress about low libido and poor sex life when there are numerous ways to solve these issues. Female sexual enhancement pills are perfect for women who want to manage their problems naturally. This article reviewed the top 11 products and their efficacy, click on the link for every product to read full reviews and determine which one is ideal for your sex life.

Author
Facebook pinterest Twitter linkedin

Dr. Stacy Friedman

Dr. Stacy is the founder of Creating Intimacy Coach, Inc. She got involved in the field of Clinical Sexology because of her passion

5 sources

We review published medical research in respected scientific journals to arrive at our conclusions about a product or health topic. This ensures the highest standard of scientific accuracy.

[1] Acute exercise improves physical, sexual arousal in women taking antidepressants. https://pubmed.ncbi.nlm.nih.gov
[2] Low sex drive in women. www.mayoclinic.org
[3] DHEA Treatment in Women Experiencing Hypoactive Sexual Disorderhttps://clinicaltrials.gov/ct2/show/NCT00916396
[4] L-Arginine for the Treatment of Hypoactive Sexual Desire Disorderhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8103282/
[5] Maca Root The Viagra For Menopausal Womenhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6494062/

**This is a subjective assessment based on the strength of the available informations and our estimation of efficacy.

*Result may vary. If you are pregnant, nursing, have a serious medical condition, or have a history of heart conditions we suggest consulting with a physician before using any supplement. The information contained in this website is provided for general informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease and should not be relied upon as a medical advice. Always consult your doctor before using any supplements.

Disclosure of Material connection: Some of the links in the post above are "associate sales links." This means if you can click on the link and purchase an item, we will receive a commission. Regardless, we only recommend products or services which we use personally and/or believe will add value to our readers. We are disclosing this in accordance with the Federal Trade Commission's 16 CFR, Part 255: "Guides Concerning the Use of Endorsements and Testimonials."