Which ingredient is commonly found in nail conditioners to promote health?

Keratin is a protein that is a fundamental component of nails, hair, and skin. It plays a crucial role in promoting nail health because it helps to strengthen the structure of the nail plate, making them less prone to breakage and splitting. By incorporating keratin into nail conditioners, products are designed to nourish the nails and improve their resilience and overall appearance.

In contrast, alcohol and acetone are solvents that can actually be drying and damaging to nails when used excessively, making them unsuitable for promoting nail health. Silicone, while often included in products for its smoothing and shiny effects, does not provide the nourishing benefits that keratin offers. Thus, keratin is the ideal ingredient for enhancing the health and vitality of nails in conditioner formulations.