Ingredient caution: rich oils, butters or occlusive emollients might feel heavy or clog pores in acne-prone/oily skin; humectants such as hyaluronic acid/glycerin are usually gentle but might feel sticky or tight if not sealed with moisturiser. Do a patch test before applying. Use a small amount first and avoid applying on active acne if it feels greasy. Apply on slightly damp skin and follow with moisturiser if dryness occurs. Stop use if irritation persists.