Vitamic C is truly effective when worn with SPF. Lotus Botanicals Vitamin C Skin Brightening MatteFLUID Sunscreen is a potent blend of 100x Vitamin C + SPF 50 that helps brightens the skin and prevents skin tanning, dark spots, pigmentation and photoaging caused by UV rays. 100x Vitamin C Sunscreen with SPF 50 is a natural toxin-free sunblock that protects against UVA & UVB radiation from the sun. It also infuses the skin with rejuvenating compounds and nourishes it to keep a youthful complexion. Non-comedogenic in nature, it does not clog pores hence is suitable for daily use by even the most sensitive skin type. It offers a radiant, matte glow that hides minor skin imperfections & redness. Unlike conventional sunscreen, it does not feel heavy or sticky and finishes without a white chalky cast.