

✨ Unlock your hair’s full potential with science-backed keratin power!
Double Wood’s Keratin Hair Growth Vitamin delivers 500mg of pure keratin per serving, clinically shown to improve hair strength by up to 50% in 90 days. This vegan-safe supplement also enhances nail health and skin vitality, backed by rigorous third-party testing and trusted by over 1,500 satisfied customers.
























| ASIN | B09B8PMY86 |
| Best Sellers Rank | #20,626 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #175 in Hair Regrowth Treatments |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,507) |
| Date First Available | July 26, 2021 |
| Manufacturer | Double Wood Supplements |
| Product Dimensions | 2.2 x 2.2 x 4.2 inches; 0.02 ounces |
M**Y
Great way to improve you nail strength as well as hair and skin. will buy again.
Very good product for nails, hair and skin.
A**M
continuity
helps my hair not to fall. but when you stop it starts falling
D**.
Great Supplement
Great Supplement
L**N
hair growth
I have been using this Keratin supplement for some time now at a daily dosage. It has been very helpful! I have noticed a strengthening in my nails, which tend to be very fragile. Previously, they would crack, tear, and peel constantly, never getting longer than the end of my finger. Now, I have less of a problem maintaining their length and have noticed less peeling. I have also noticed hair growth at my temples. At first, I was afraid that I was frying my hair with my styling products, however, my hairdresser took a look and noted that it was new growth! While still short in length, it is definitely still growing.
L**N
Works well
Strengthens hair and nails
C**Y
Admittedly excellent for hair and nail growth
I’m almost done with my first bottle, and realized this week that my nails were so much stronger, they were no longer breaking. It took almost a month to see those results, but suddenly both my hair and nails are denser. Very impressed.
S**S
Results in 2 months
Started taking to reduce hair loss and I’ve seen significant improvement.
P**I
Needs other supplements to Work
Have been using this product for about 1.5 years. I also combine it with biotin, magnesium, Vitamin D3 & BComplex. It is very slow-growing, and I really can't say if it has contributed to hair growth enough.
L**D
Go for it! Next day delivery. Great packaging. Well stored. Good results! Buy it if you are looking for Keratin supplements. Do not hesitate.
A**E
I do not think it benefits my hair at all after taking it for 2 months.
Trustpilot
1 month ago
3 weeks ago