South Dakota Cosmetology Practice Exam

Keratin is a critical protein that plays a significant role in the structure of hair, skin, and nails. In deep conditioning treatments, it is often included because it helps to restore strength, elasticity, and overall health to hair that may have been damaged by various factors such as heat styling, chemical treatments, or environmental stressors. By infusing hair with keratin, these treatments can effectively improve its texture and appearance, reducing frizz and promoting shine. This makes keratin a popular ingredient when aiming for intense repair and nourishment in deep conditioning products.

The other ingredients, while beneficial in their own rights for hair health and hydration, primarily serve different purposes. For instance, collagen primarily helps with skin elasticity and may not directly address hair structure. Argan oil is known for its moisturizing properties and helps with shine and hydration but does not specifically fortify the hair structure like keratin does. Lastly, aloe vera is celebrated for its soothing and hydrating qualities, particularly for the scalp, but does not provide the structural support that keratin does. Therefore, keratin stands out as a key ingredient in deep conditioning treatments aimed at repairing and strengthening hair.