Keratin Enhance | GNC

ResVitále™ Keratin Enhance


Item # 446721
$34.99 $31.04


Size: 60 Capsules

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Keratin Enhance with Biotin and Resveratrol presents the latest advancement in beauty supplements.* Incorporating Cynatine® HNS Keratin, a patented form of keratin that is easily absorbed by the body, this formula offers optimal nourishment and repair for youthful hair, nails and skin.* Keratin Enhance with Biotin and Resveratrol helps reduce fine lines and wrinkles, decreases hair loss and promotes healthy, strong nails.* Satisfy your body with this essential support for age-defying beauty.*

THE ART ResVitále introduces the world’s first Solubilized Keratin – a recent breakthrough in beauty supplementation.* Cynatine® HNS Keratin is manufactured using a patented process that makes it both bioactive and bioavailable.*

  • Patented, absorbable form of keratin*
  • Reduces fine lines and wrinkles*
  • Supports thicker, fuller hair*
  • Promotes stronger, nourished nails*
THE PROOF Studies have shown that Cynatine® HNS reduced hair loss from washing by 30% over 90 days.

Label (click image to enlarge)


As a dietary supplement, take 2 capsules daily with meals or as directed by your health care practitioner. For best results, take for a minimum of 90 days.


Keep out of reach of children , DO NOT USE IF OUTER SEAL IS BROKEN OR MISSING., As with any dietary supplement, consult your health care practitioner before using this product, especially if you are pregnant, nursing, have existing medical conditions or are taking prescription medications.

Other Ingredients

Vegetarian capsule (vegetable cellulose), Rice bran , Silica


Store tightly closed in a cool, dry place.
MANUFACTURED FOR RESVITÁLE 701 S. Howard Ave., Suite 106-310 Tampa, FL 33606

Nutrition Facts

Serving Size  2 Vegetarian Capsules
Servings Per Container  30

Amount Per Serving     % DV

Biotin 3000mcg   1000%

Cynatine® HNS (Solubilized Keratin)  500 mg   **
Organic French Red Wine Polyphenol Extract  40 mg   **
   Organic French red grape and vine (Vitis vinifera) full spectrum polyphenol profile   **
   Muscadine USDA certified organic red grape   **
   seed and grape pomace (Vitis rotundifolia)   **
   natural wild Japanese Knotweed (Polygonum cuspidatum) standardized to contain a minimum of 50 mg of the trans-Resveratrol isomer   **
Quercetin Dihydrate  20 mg   **

** Daily Value (DV) not established.


4.5 / 5.0
24 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Definitely Recommend
I have been using it almost every day for the past 2 months. Very light and easy to swallow vegetarian capsules (unlike some vitamins' caps). No side effects like heartburn or nausea, regardless if taken with food or on an empty stomach. No allergic reactions. The first sigh I noticed that made me really like this product is that less hair falls out now when I wash it. Second,my hair got thicker, fuller, and lustrous. I have been using the same shampoo all the time and have not changed my diet recently. Therefore I only attribute all these changes to this supplement. Definitely recommend.
June 2, 2012
Great Product
This product was recommended by a Dermatologist from Costa Rica, since it has 500 MG of Keratin that prevents hair lost due to Thyroid conditions.
February 6, 2013
This product is amazing
I have been using this Keratin for 3 weeks now. I have been suffering a knee pain when I run for the last 5 years. With this product my knee problem just disappeared.

My hair is growing much faster, and it seems shiner.

Really, this product works better than they state.

I would recommend it!!!
March 20, 2012
Fantastic for hair and nails!
My nails are stronger and not as brittle, and my hair has extra shine! And i've only been using it for 2 weeks! Love it :) Capsules are also easy to swallow.
May 9, 2011
Incredible Product!
Biotin would take over 3 months for me to see any benefit in my nails, let's not even talk about how long I'd have to take it to see any difference in my hair. With this Keratin Enhance, I actually saw a difference in my nails within 10 days! With my hair it took about 3 months, but I noticed I lost a lot less hair in the shower and when I brushed my hair - Plus the actual hair growth is coming out thicker. I LOVE this product, I'm so excited I've found something that actually helps me with my hair loss!
August 7, 2011
LOVE this product!
Hair is silkier , shinier, and stronger.
October 4, 2012
I would buy this product again and again
I used this product every day , its great in hair loss also I recommended this to my friends and all stated to buy it. Its great !!!!
February 29, 2012
Great Product
I always new Keratin was great for the hair but there were only topical products that provided this source, now there is an internal source.
November 16, 2011
Results are AMAZING!
I'm a 42 year-old female, and after undergoing chemo, my hair grew back quickly. However, a few months ago, I noticed that my hair was thin in spots, so I decided to look into hair supplements. I had been using one of GNC's formulas for hair/skin/nails for about a year, and had "ok" results. But I still had a lot of breakage, wads of hair coming out in the shower and in the brush, and my hair was difficult to manage and tangled easily. (This despite a pretty good diet, good hair products, and high-end styling tools.)

I took a chance on this product, and ordered two bottles on sale. I'm now working on my second bottle. I'm normally a skeptic on these things but I have been really impressed by the results I've seen. I see less hair loss now both in the shower and brushing my hair. I am absolutely amazed that I have a little patch of hair that is rapidly lengthening across my forehead, where before it was just tiny wisps that I thought nothing of, since they never seemed to grow. The thin areas that bothered me are filling out really quickly and as a bonus, my normally thin weak nails have been growing just as nicely.

I have now decided to add this product permanently to my vitamin regime. If you are on the fence, just try two bottles. If it doesn't work, you can get your money back. But this product is so wonderful, I'm betting you won't want to! :)
November 20, 2015
Great stuff for joint pain
I use product to relieve joint and back pain. 30 days after starting all morning stiffness in joints and back were gone. Hair is thicker and stronger as well. Only problem is, as a man, my nails grow too fast.
October 26, 2011

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