A Serum-Light Mineral Sunscreen That Protects & Glows Avà Isa Sun‑è‑Serum Drops SPF 35 combines high-performance sun protection with the feel of a lightweight facial serum. Developed by dermatologists and powered by 25% zinc oxide, this all-mineral sunscreen delivers strong daily protection against UVA and UVB rays while feeling silky and breathable on the skin. Its thin, serum-like texture blends easily and absorbs quickly, leaving a soft, luminous demi-matte finish with little to no white cast — suitable for all skin tones from Fitzpatrick types I–VI. With a UVA Protection Factor of 14.9, this sunscreen offers up to three times more UVA defense than many North American sunscreens, helping prevent visible signs of premature aging and hyperpigmentation. The reef-friendly, vegan formula also helps protect against visible light exposure, which can contribute to free radical damage and uneven pigmentation. Lightweight. Protective. Glow-enhancing.