Hydrolyzed Keratin

Its label clearly provides 750 mcg of Vitamin A as Vitamin A Palmitate, making it a more clearly defined keratin option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.

Its label clearly provides 18mg NE of Niacin as Niacinamide, making it a more clearly defined keratin option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.

Its label clearly provides 18mg NE of Niacin as Niacinamide, making it a more clearly defined keratin option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.

Its label clearly provides 50 mg of Keratin as Tibetan Wool, preserving relevant keratin coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.

Its label clearly provides 255 mg of Vitamin C as Ascorbic Acid, preserving relevant keratin coverage. It is not lower-cost than the original, but it is the closest remaining eligible fit for this category; the input does not provide independent testing or absorption evidence.

Its label clearly provides 10 mg of Biotin as D-Biotin, preserving relevant keratin coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.

Its label clearly provides 18mg NE of Niacin as Niacinamide, keeping the formula relevant to keratin. Compared with the original, the somewhat higher serving cost and ingredient detail create a useful quality-to-cost balance, although the input does not provide independent testing or absorption evidence.

Its label clearly provides 18mg NE of Vitamin B3 as Niacinamide, keeping the formula relevant to keratin. Compared with the original, the somewhat higher serving cost and ingredient detail create a useful quality-to-cost balance, although the input does not provide independent testing or absorption evidence.

Its label clearly provides 25 mg of Coenzyme Q-10 as Ubiquinone, keeping the formula relevant to keratin. Compared with the original, the somewhat higher serving cost and ingredient detail create a useful quality-to-cost balance, although the input does not provide independent testing or absorption evidence.