Beauty Molecules B5 Protective Ultra-Light Serum SPF 50
The Bielenda Beauty Molecules B5 Protective Ultra-Light Serum SPF 50 is a serums, essence, ampoule. Our analysis of its 51 ingredients (38 low-risk) rates it Excellent (95/100). Based on its ingredients, it looks well-suited to dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
The Bielenda Beauty Molecules B5 Protective Ultra-Light Serum SPF 50 is a serums, essence, ampoule. Our analysis of its 51 ingredients (38 low-risk) rates it Excellent (95/100). Based on its ingredients, it looks well-suited to dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Water
(Solvent) |
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C12-15 Alkyl Benzoate
(Skin Conditioning, Emollient, Antimicrobial) |
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Dibutyl Adipate
(Plasticizer, Skin Conditioning, Emollient, Solvent, Film Forming) |
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Diethylamino Hydroxybenzoyl Hexyl Benzoate
(Uv Absorber, Uv Filter) |
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Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
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Tris-Biphenyl Triazine
(Light Stabilizer, Uv Absorber, Uv Filter) |
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Methylene Bis-Benzotriazolyl Tetramethylbutylphenol
(Uv Filter) |
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Coconut Alkanes
(Emollient, Solvent) |
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Titanium/Titanium Dioxide
(Cosmetic Colorant, Opacifying) |
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C14-22 Alcohols
(Emulsion Stabilising) |
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Ethylhexyl Triazone
(Uv Absorber, Uv Filter) |
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Isodecyl Neopentanoate
(Skin Conditioning, Emollient) |
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Prunus Amygdalus Dulcis Oil
(Skin Conditioning) |
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Alpha-Arbutin
(Antioxidant, Skin Conditioning) |
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Ectoin
(Buffering Agent, Skin Conditioning, Emollient) |
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Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
Good for Dry Skin
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Alpha-Glucan Oligosaccharide
(Cleansing, Skin Conditioning, Smoothing) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Polymnia Sonchifolia Root Juice
(Skin Conditioning) |
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Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding) |
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Hydrolyzed Rice Protein
(Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Beta-Sitosterol
(Emulsion Stabilising, Masking, Skin Conditioning, Stabilising) |
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Lactobacillus
(Skin Conditioning) |
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Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling) |
Good for Dry Skin
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning) |
Silicone
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Glycine Soja Oil
(Perfuming, Skin Conditioning, Skin Conditioning Emollient) |
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Squalene
(Hair Conditioning, Skin Conditioning, Emollient, Antistatic Agent, Refatting) |
Fungal Acne Trigger
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Decyl Glucoside
(Cleansing, Emulsion Stabilising, Surfactant) |
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C12-20 Alkyl Glucoside
(Emulsifying, Surfactant) |
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Potassium Cetyl Phosphate
(Emulsifying, Surfactant) |
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Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling) |
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Glyceryl Stearate
(Emollient, Emulsifying) |
Fungal Acne Trigger
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Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling) |
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Microcrystalline Cellulose
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Emulsion Stabilising, Slip Modifier, Viscosity Increasing Agent) |
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Stearic Acid
(Fragrance, Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Stearic Acid., Emulsion Stabilising, Masking, Refatting) |
Bad for Oily Skin
Fungal Acne Trigger
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Alumina
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
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Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
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Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
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Disodium Phosphate
(Buffering Agent, Anticorrosive, Fragrance, Ph Adjuster, Masking) |
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Cellulose Gum
(Binding Agent, Emulsion Stabilising, Film Forming, Fragrance, Viscosity Increasing Agent, Binding, Masking, Viscosity Controlling) |
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TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking) |
Allergens
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PARFUM
(Fragrance, Perfuming) |
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Limonene
(Deodorant, Perfuming, Solvent) |
Allergens
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Linalool
(Fragrance, Deodorant, Masking) |
Allergens
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Hexyl Cinnamal
(Fragrance, Masking) |
Allergens
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How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.
Lactic Acid
INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.
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