
Using hyaluronic acid, glycerin and retinol in a formulation can impart a variety of skin attributes such as include anti-aging, hyperpigmentation reduction, anti-acne, smoothing and an increase in water retention.
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With the increase in popularity (and deeply penetrating efficacy) of hyaluronic acid, and the potent nature of retinol, questions have been raised as to what types of ingredients can be combined with retinol to ensure efficacy without causing adverse reactions in skin.