1 7

SunDay Mineral Serum SPF 50+

SunDay Mineral Serum SPF 50+

Lightweight mineral SPF face serum for daily protection. Powered by niacinamide to hydrate and support the skin barrier, it shields and strengthens without the weight - perfect under makeup or as your everyday base. Water-resistant with a breathable finish.

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.

View full details

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

Customer Reviews

Based on 10 reviews
100%
(10)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
100.0
E
Eliza
how SPF should feel!

I love the finish of this so much that I haven't skipped SPF once since adding the serum to my routine

P
Patti
My new fave skincare product

This serum feels so luxurious. The glass bottle is gorgeous and the serum is weightless. I put it on under my makeup every day and forget its there.

S
Serena T.
Love

Wore this hiking all day and forgot I had SPF on. No burn, no sweat dripping it off, and my skin looked great in all the pics lol.

B
Brooke M.
No breakouts

I never have worn SPF as much as I should because everything made me shiny or broke me out. This feels like nothing but works!

J
Julia
love love love!

Love this product because it is basically a one step skincare + spf. It feels silky on your skin but then completely sinks in. I can't believe it's mineral! I've even been wearing this while running and it WORKS!

12