The provided reviews do not explicitly mention whether the Waterfull sun cream [SPF50+/PA++++] [Tone-Up/PINK] by d'Alba is a mineral sunscreen or a chemical sunscreen. To determine this, one would typically look for specific ingredients such as zinc oxide or titanium dioxide for mineral sunscreens, or ingredients like avobenzone, oxybenzone, or octinoxate for chemical sunscreens. Since the ingredient list is not provided in the reviews, I cannot definitively answer whether this product is mineral-based.