The ALGA MARIS - LAB. BIARRITZ SUN STAIN STICK SPF50+ 9g is a sunscreen stick that provides high protection against UVA and UVB rays. This product is formulated with natural and organic ingredients, including seaweed, which helps to hydrate and nourish the skin. In addition to protecting against harmful sun rays, this sunscreen stick also provides a light touch of color, making it ideal for use as a makeup base or to give the skin a sun-kissed look. Instructions for use To use this product, apply an even layer to the skin before sun exposure. It is recommended to reapply every 2 hours and after swimming or heavy sweating.