Keratin Enhance | GNC

ResVitále™ Keratin Enhance


Item # 446721


Size: 60 Capsules

Add to cart options

Product Options

Product Actions


Product Information


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.


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

Garder hors de la porée des enfants. Garder produit a une température et humidité ambiante. , 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
26 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Great Product
I've been using this for about a month and has already seen a difference in my nails and hair. You have to be committed to it for three months and Im ordering my second bottle today! I will keep you updated!
June 24, 2017
Been on it thirty days as of now, have seen some new growth. Hope to continue
May 31, 2017
1 month ago
Medication I am on caused significant hair loss, but this has greatly slowed that down to where a just lose a few strands when washing my hair. I stopped it for a while and the hair started falling out again in bunches. Went back on this and the hair loss slowed again. Definitely helps.
December 29, 2016
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
i take it daily
January 9, 2015
I need all the help I can get
I like the fact that it has keratin and biotin together, the two structures that make up hair. I am on my fifth bottle and really enjoying the results. I usually buy two at a time, cause for some reason my GNC store is not given a large stock of it, so sometimes it's hard to find. I have to order it and even then the warehouse has none in stock. They always go on sale for a "2for" bogo 1/2 off the second....I like that!
April 2, 2013
excellent product!
I have a severe deficiency on my keratin (biotin) levels and this product help me a lot in regards to my skin and hair growth. Started seeing the positive changes very quickly. The only thing to keep in mind is that in stores is difficult to find.
March 31, 2013
Super happy with the product
Love the product, the results starting showing one month after initiated the 3 month period. Easier to find on the website than in stores
March 27, 2013
I believe its a good product
I just started taking this product, so its too soon for me to say what I think
March 17, 2013
This Works. . .
Since my early 20's, I've have soft nails that tear easily, and lots of ugly ridges in my nails, too! I have been taking Keratin Enhance for three months and my nails are strong and the ridges are almost gone. I'm even looking forward to sandal season for the first time. My toenails will be o.k. to show! This stuff works. . . Oh! My hair is fuller, too!
February 11, 2013