SkinCeuticals Hydrating B5 Gel is a highly effective daily serum, Hydrating B₅ contains hyaluronic acid, a naturally occurring component of the skin responsible for maintaining moisture levels, to deliver weightless hydration. Enhanced with vitamin B₅ to promote the skin’s natural repair process, this nutrient-rich gel is ideal for all skin types, and can be used alone for lightweight hydration or with a moisturizer to maximize benefits for drier skin.