La Roche-Posay Mela B3 UV Daily Moisturizer SPF 30 With Melasyl™ + Niacinamide
49/100 overall score
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About this sunscreen
La Roche-Posay Mela B3 UV is an SPF 30 mineral daily moisturizer that pairs Titanium Dioxide as its sole UV filter with niacinamide and the brand's Melasyl ingredient. It has a balanced finish, does not commonly sting, and works okay under makeup, though a medium white cast is possible from the single mineral filter. Protection rates as weak, which caps the score. At 49.0/100 it leans more toward its skincare benefits than toward high sun defense.
Ingredient & SPF scores
☀️
UV protection
Weak
20
- +31.4 Titanium Dioxide at #7, UV filter (UVA1 +4.8)
- ×0.6 Almost no UVA1, poor aging protection
- +1 Label claims (SPF 30)
🤧
Allergens
Low
70
- +100 Starting score
- −18 Fragrance
- −12 Opaque "Fragrance", hidden allergens that can't be checked from the label
👻
White cast
Medium
50
- +100 Starting score
- −35 Titanium Dioxide at #7
- −15 Pure mineral formula
🔥
Eye sting
Low
98
- +100 Starting score
- −8 Fragrance
- +6 Mineral filter system, low-sting filters
🪨
Heavy feel
Low
79
- +100 Starting score
- −16 Titanium Dioxide at #7
- −5 Butyrospermum Parkii Fruit at #8, butter/occlusive fat
🍄
Fungal acne
Low
86
- +100 Starting score
- −14 1 oils/butters that feed Malassezia (Butyrospermum Parkii Fruit)
👕
Fabric stains
Low
90
- +100 Starting score
- −10 Titanium Dioxide at #7, white marks, worst on dark fabric (washable)
💧
Moisture
Hydrating
LightNourishing
- ← 5 1 sebum-absorbing powders (Silica)
- → 10 Glycerin at #4, the anchor humectant
- → 1 Humectant polyols
- → 2 1 emollient lipids (Butyrospermum Parkii Fruit)
- → 0.5 1 fatty-alcohol emollients (Arachidyl Alcohol)
✨
Finish
Balanced
MatteDewy
- ← 6 1 sebum-absorbing powders (Silica)
- → 3 1 emollient lipids (Butyrospermum Parkii Fruit)
💄
Makeup base
Okay
PillsPrimer
- → 3 1 soft-focus powders in moderation
- ← 5 Gel polymers prone to pilling under friction (Carbomer, Poly C10-30 Alkyl Acrylate, Ammonium Acryloyldimethyltaurate/VP Copolymer)
- ← 2 Occlusives/waxes float the foundation
- ← 1.5 Humectant syrup tackiness (partly offset by the base)
- ← 6 High mineral load at #7 greys under foundation
🌊
Water resistance
Not resistant
Non-water-resistantWater-resistant
Nothing flagged in the ingredient list.
How we rate water resistance →Skincare extras
Beneficial actives this formula contains. Informational only, not part of the rating: their effect depends on a concentration the label does not disclose.
- ✨ Niacinamide
Full ingredient list (32)
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.
-
1 Water
Solvent base, the water phase
-
Emollient, softens and smooths skin
-
Soothing, skin-conditioning active
-
4 Glycerin
Humectant, pulls water into the skin
- 10 → nourishing the anchor humectant
-
Humectant, pulls water into the skin
- 1 → nourishing humectant polyol
-
6 Silica
Mattifying powder, absorbs oil and blurs the finish
- light ← 5 sebum-absorbing powder
- matte ← 6 sebum-absorbing powder
-
Mineral UV filter (Titanium Dioxide)
- ↑ 31.4 UV protection, incl. long-UVA (UVA1)
- ↑ 10 white marks, worst on dark fabric (washable)
- pills ← 6 High mineral load greys under foundation
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Botanical extract
- ↑ 5 butter/occlusive fat
- 2 → nourishing emollient lipid
- 3 → dewy emollient lipid
- ↑ 14 feeds malassezia
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Colorant or pigment
-
10 Hydroxide K
pH adjuster
-
11 Carbomer
Thickener and texture, structures the gel or cream
-
Fatty alcohol, an emollient and thickener, not the drying kind
- 0.5 → nourishing fatty-alcohol emollient
-
Emulsifier, keeps oil and water blended
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Fatty alcohol, an emollient and thickener, not the drying kind
-
Protein, peptide or amino acid, conditions and hydrates skin
-
Protein, peptide or amino acid, conditions and hydrates skin
-
Supporting ingredient
-
Thickener and texture, structures the gel or cream
-
Antioxidant, protects the formula and skin
-
Supporting ingredient
-
Preservative, keeps the formula from spoiling
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22 Citric Acid
pH adjuster
-
Chelator, binds stray metal ions to keep the formula stable
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24 Xanthan Gum
Thickener and texture, structures the gel or cream
-
Humectant, pulls water into the skin
-
Thickener and texture, structures the gel or cream
-
Emulsifier, keeps oil and water blended
-
Antioxidant, protects the formula and skin
-
Preservative, keeps the formula from spoiling
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30 Ci 14700
Colorant or pigment
-
31 Mica
Colorant or pigment
-
32 Fragrance
Fragrance
Does La Roche-Posay Mela B3 UV leave a white cast?
A medium white cast is possible. It uses Titanium Dioxide as its only filter, and single-mineral formulas can show some cast depending on skin tone.
Is the La Roche-Posay Mela B3 UV Daily Moisturizer SPF 30 With Melasyl™ + Niacinamide mineral or chemical?
It is a fully mineral sunscreen, with Titanium Dioxide as its only UV filter, paired with skincare ingredients like niacinamide and the brand's Melasyl.
Is La Roche-Posay Mela B3 UV any good?
Its protection rates as weak, which caps the score at 49.0/100, so it leans more toward its skincare benefits than high sun defense. It is gentle and does not commonly sting, but it suits low-exposure daily use.