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SunDay Mineral Serum SPF 50+

SunDay Mineral Serum SPF 50+

High-protection, water-resistant mineral face SPF made for peak sun and longer wear. Formulated with higher-level zinc oxide using SONNI’s smarter zinc technology, plus barrier-supporting ingredients like niacinamide, this concentrated power layer delivers strong broad-spectrum protection with a smooth, controlled finish that layers cleanly under makeup and holds up through heat and outdoor days.

50mL / 1.7 fl oz

  • Vegan
  • Cruelty-free
  • Dermatologist-tested
  • Non-comedogenic
  • Non-nano
  • Reef-safe
  • Paraben-free
  • Fragrance-free
  • 80-minute water resistance

Why we made it

Most SPF feels like a compromise. This mineral-based serum goes on smooth, layers easily, and protects without getting in the way.

Why Your Skin Will Love It

  • Broad-spectrum protection with non-nano zinc oxide
  • Niacinamide strengthens your barrier and reduces redness
  • 80-minute water resistance for sweat, swim, and sun
  • Silky, lightweight texture that layers well with makeup or looks good on its own

How to use

Shake well before use. Apply 15 minutes before sun exposure. Reapply every two hours, or after 80 minutes of swimming or sweating. Rub in well (mineral-based SPF takes a moment to sink in). Pro tip: use as the last step in your skincare routine or as a priming layer under makeup.

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Key Ingredients

See list of full ingredients

Zinc Oxide (12%)

Mineral-based protection that reflects UV rays and helps shield skin from daily sun exposure.

Niacinamide

Supports your skin barrier, calms visible redness, and helps improve tone and texture over time.

Allantoin

A gentle plant-derived ingredient that soothes sensitivity and supports post-sun recovery.

Urban Shield Technology

Targets pollution-induced free radicals to help defend skin from environmental stress.

Vegan

Cruelty-free

Fragrance-free

Non-nano zinc

Reef-safe

Paraben & sulfate-free

Vegan

Cruelty-free

Fragrance-free

Non-nano zinc

Reef-safe

Paraben & sulfate-free

Vegan

Cruelty-free

Fragrance-free

Non-nano zinc

Reef-safe

Paraben & sulfate-free

Vegan

Cruelty-free

Fragrance-free

Non-nano zinc

Reef-safe

Paraben & sulfate-free