Keratin itself doesn't have symptoms. Keratin is a protein that makes up hair, nails, and skin. However, the build-up of keratin can cause various symptoms.
One example is keratosis pilaris, which is a harmless skin condition that causes dry, rough patches and tiny bumps on the skin. This condition is caused by too much keratin blocking hair follicles. It commonly affects the upper arms, thighs, cheeks, and buttocks.
Another condition related to keratin buildup is hyperkeratosis. This can cause calluses, corns, eczema, and other skin conditions.
Keratin treatments, especially those using formaldehyde, can also have side effects. These include:
- Eye and respiratory irritation
- Hair damage
- Allergic reactions
It's important to note that keratin is essential for healthy skin, hair, and nails. The issue arises when there's an imbalance or build-up of keratin.
