This was a gift with purchase for my order on 9/15/24. See last photo for my confirmation email from SkinCeuticals with the B5 Gel gift with purchase circled. 15ml/0.5 fl oz. Never opened until today’s photographing, seal on bottle intact. Hydrating B5 Gel Product Details: Hydrating B5 gel is an oil-free hydrating serum that replenishes moisture and renews radiance for a smoother complexion. Hydrating B5 Gel replenishes the skin for a smoother feel and younger appearance. This oil-free moisturizer combines vitamin B5 with hyaluronic acid, the body’s natural hydrator, to help bind moisture to the skin. It can be used alone or with a daily moisturizer to provide extra hydration and is an ideal moisturizer for blemish-prone skin.