The effects vary greatly depending on whether your hair is healthy to begin with, what the natural thickness of your hair is, and what kind of keratin treatment you use.The strength of your hair and nails reflects the amount of Keratin in them: low amounts of Keratin can lead to breakage of the hair strand and brittle nails. The cDNA sequence of a type II cytoskeletal keratin reveals constant and variable structural domains among keratins".
Results will always vary for individuals, depending on the individual’s physical condition, lifestyle, and diet. mg (15% DV), riboflavin 0,2 mg (10% DV), niacin 3 mg (15% DV), vitamin B6 1 mg (50% DV), folate 70 mcg (20% DV), biotin 2,500 mcg (830% DV), pantothenic acid 1 mg (10% DV), zinc 0.
Wearing rubber gloves when handling detergents and bleach is also a must, as overexposure to these chemicals can make nails soft, resulting in them splitting or breaking. Biotin is most concentrated in organ meats such as liver, but can also be found in egg yolk, dairy products, yeast, salmon, avocado, sweet potato, nuts, seeds and even cauliflower. A deficiency in folate can cause a pigment change in your nails and make them rigid and brittle ( 7).