Circadia Circa-Shield - Mineral Sunscreen SPF 30
68/100 overall score
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About this sunscreen
Circadia Circa-Shield Mineral Sunscreen SPF 30 is a pure mineral sunscreen using Zinc Oxide as its only UV filter. It wears with a balanced finish and commonly does not sting, suiting sensitive skin, though it runs medium in weight and can leave a medium white cast. With a score of 68.4/100 and moderate protection, it is a reasonable mineral choice for everyday use.
Ingredient & SPF scores
☀️
UV protection
Moderate
42
- +41 Zinc Oxide at #2, UV filter (UVA1 +18)
- +1 Label claims (SPF 30)
👻
White cast
Medium
41
- +100 Starting score
- −55 Zinc Oxide at #2
- −15 Pure mineral formula
- +7 PHSA dispersant, fights agglomeration
- +4.4 Coated minerals (Triethoxycaprylylsilane)
🔥
Eye sting
Low
100
- +100 Starting score
- −2 1 declared fragrance allergens
- +1.5 Mineral filter system, low-sting filters
🔴
Comedogenic
Low
84
- +100 Starting score
- −1 Glycine Soja Oil at #16, moderate comedogenic signal
- −15 Olea Europaea Fruit Oil at #3, moderate comedogenic signal
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Fungal acne
High
6
- +100 Starting score
- −30 1 polysorbate/sorbitan emulsifiers that feed Malassezia (Sorbitan Olivate)
- −45 2 oils/butters that feed Malassezia (Olea Europaea Fruit Oil, Glycine Soja Oil)
- −9 1 long-chain (C12+) esters that feed Malassezia (Polyglyceryl-3 Diisostearate)
- −10 2 different Malassezia-feeding families high in the list
- +0 Saccharomyces Ferment at #12, ferment, disputed Malassezia trigger (not penalized)
- +0 Simmondsia Chinensis Seed Oil at #10, jojoba wax ester, fungal-acne exception (not penalized)
👕
Fabric stains
Low
85
- +100 Starting score
- −15 Zinc Oxide at #2, white marks, worst on dark fabric (washable)
💧
Moisture
Light
LightNourishing
- ← 6.5 2 sebum-absorbing powders (Silica, Lauroyl Lysine)
- ← 4 Volatile carriers flash off, leaving a dry finish
- ← 5 Zinc Oxide at #2, mild sebum absorbent
- → 9 3 emollient lipids (Simmondsia Chinensis Seed Oil, Olea Europaea Fruit Oil, Glycine Soja Oil)
✨
Finish
Balanced
MatteDewy
- ← 7 2 sebum-absorbing powders (Silica, Lauroyl Lysine)
- ← 4 Volatile carriers flash off, leaving a dry finish
- ← 2 1 dry-touch emollients reduce greasy shine (Diisopropyl Adipate)
- → 13 3 emollient lipids (Olea Europaea Fruit Oil, Simmondsia Chinensis Seed Oil, Glycine Soja Oil)
💄
Makeup base
Okay
PillsPrimer
- → 3 Quick-setting carrier, fast, even canvas
- → 2 Dry-touch esters, smooth fast-absorbing base
- ← 4 Occlusives/waxes float the foundation
- ← 15 High mineral load at #2 greys under foundation
🌊
Water resistance
Not resistant
Non-water-resistantWater-resistant
Nothing flagged in the ingredient list.
How we rate water resistance →Full ingredient list (35)
What each ingredient does and how it moves each rating: green helps, red hurts, ↑ / ↓ give the direction, and ← / → shift a slider toward its ends (finish, moisture, makeup base). Auto-derived from our scoring rules and the ingredient's position.
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Emollient, softens and smooths skin
-
Mineral UV filter (Zinc Oxide), high in the list, a primary filter
- ↑ 41 UV protection, incl. long-UVA (UVA1)
- ↑ 15 white marks, worst on dark fabric (washable)
- light ← 5 mild sebum absorbent
- pills ← 15 High mineral load greys under foundation
-
Botanical extract
- ↑ 15 moderate comedogenic signal
- 6 → nourishing emollient lipid
- 9 → dewy emollient lipid
- ↑ 36 feeds malassezia
-
Emulsifier, keeps oil and water blended
- ↑ 30 feeds malassezia
-
Emollient, softens and smooths skin
- matte ← 2 dry-touch emollient, anti-shine
-
Emollient, softens and smooths skin
- light ← 4 volatile carrier, flashes off
- matte ← 4 volatile carrier, flashes off
-
7 Silica
Mattifying powder, absorbs oil and blurs the finish
- light ← 5 sebum-absorbing powder
- matte ← 6 sebum-absorbing powder
-
Occlusive, seals moisture into the skin
-
Plant oil, an emollient
-
Botanical extract
- 2 → nourishing emollient lipid
- 3 → dewy emollient lipid
-
Botanical extract
-
Supporting ingredient
-
Emulsifier, keeps oil and water blended
-
Supporting ingredient
-
Emollient, softens and smooths skin
-
Plant oil, an emollient
- ↑ 1 moderate comedogenic signal
- 1 → nourishing emollient lipid
- 1 → dewy emollient lipid
- ↑ 9 feeds malassezia
-
Emollient, softens and smooths skin
-
Emollient, softens and smooths skin
-
Mattifying powder, absorbs oil and blurs the finish
- light ← 1.5 sebum-absorbing powder
- matte ← 1 sebum-absorbing powder
-
Supporting ingredient
-
Emulsifier, keeps oil and water blended
- ↑ 9 feeds malassezia
-
Botanical extract
-
Botanical extract
-
Emollient, softens and smooths skin
-
Botanical extract
-
Botanical extract
-
Supporting ingredient
-
Botanical extract
-
Botanical extract
-
Botanical extract
-
Botanical extract
-
Botanical extract
-
Botanical extract
-
Botanical extract
-
35 Linalool
Fragrance component, a declared allergen
Is Circadia Circa-Shield mineral or chemical?
It is a pure mineral sunscreen. Zinc Oxide is its only UV filter, with no chemical filters, which commonly suits those who prefer mineral-only protection.
Does the Circadia Circa-Shield - Mineral Sunscreen SPF 30 leave a white cast?
It can leave a medium white cast, which is common for zinc-based mineral formulas. The balanced finish helps, but deeper skin tones may notice some residue.
Is it good for sensitive skin?
It commonly does not sting and rates low on pore-clogging, which is generally favourable for sensitive and breakout-prone skin. It scores 68.4/100 with moderate protection.