What is a common ingredient in hydrating facial masks?

Hyaluronic acid is a widely recognized ingredient in hydrating facial masks. It is a powerful humectant, meaning it has the ability to attract and retain moisture in the skin. Each molecule of hyaluronic acid can hold up to 1,000 times its weight in water, making it incredibly effective for hydrating and plumping the skin. This property is particularly beneficial in facial masks that aim to provide intense hydration, improve skin elasticity, and create a smoother appearance.

In contrast, the other ingredients listed serve different primary purposes. Salicylic acid is often used for its exfoliating properties and is particularly beneficial for treating acne-prone skin. Retinol is a form of vitamin A that is primarily utilized for its anti-aging effects, helping to reduce the appearance of fine lines and improve skin texture. Vitamin C is well-known for its brightening effects and its role in collagen synthesis, which can help with skin tone and texture issues but does not primarily focus on hydration. Thus, hyaluronic acid stands out as the key player when it comes to providing hydration in facial masks.