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STRATUM Skin Science

FRM Formula

SPF

Daily Mineral Shield SPF 30

A mineral-only filter that stays exactly where sunscreen is supposed to stay: on the surface.

$38 50ml

SPF 30 from zinc oxide and titanium dioxide alone — no chemical filters. Both minerals work by sitting on and just above the corneum, scattering and absorbing UV before it reaches living cells, which is exactly why neither one is formulated to go any deeper.

No fragrance, no added tint. A tinted version is on our list, not yet in the range.

Built around

  • Zinc Oxide / Titanium Dioxide Corneum

    Sits at the surface by design -- a mineral filter scatters and absorbs UV before it reaches living cells, so it is not formulated to go any deeper.

Where this formula works

INCI Full Ingredient List

Full INCI ingredient list, in formulated order
# INCI Name
01 Aqua
02 Zinc Oxide
03 Caprylic/Capric Triglyceride
04 Titanium Dioxide
05 Glycerin
06 Cetyl PEG/PPG-10/1 Dimethicone
07 Niacinamide
08 Polyhydroxystearic Acid
09 Squalane
10 Dimethicone
11 Tocopherol
12 Xanthan Gum
13 Phenoxyethanol
14 Ethylhexylglycerin

Listed in descending order of concentration, as required for cosmetic labelling. Trace/regulatory-threshold ingredients appear last.

USE How To Use

Final AM step, reapplied every two hours in direct sun and after swimming or heavy sweating. Mineral filters can leave a temporary white or grey cast on deeper skin tones; we have not reformulated this into a claim that it disappears completely, because it does not for everyone.