Below is every ingredient in Lakme Sun Expert Spf 50 Pa Ultra Matte Lotion Sunscreen explained, its standout actives, and the side effects reported in research for those actives — analysed for Indian skin.
Flags derived from the ingredient list using dermatology reference data (fungal-acne substrate, comedogenicity, EU allergens). General guidance, not a diagnosis.
Answers are derived from the printed ingredient list and dermatology reference data — general guidance, not a diagnosis or a therapeutic claim.
Ethylhexyl Methoxycinnamate (octinoxate) is a widely used organic UVB-absorbing sunscreen agent that protects skin from ultraviolet radiation. It is commonly incorporated into sunscreens and daily cosmetics with SPF claims.
Zinc oxide is a mineral (inorganic) UV filter that provides broad-spectrum protection against UVA and UVB radiation by scattering and absorbing light. It also has mild astringent and soothing properties and is used in sunscreens, diaper creams, and barrier preparations.
Phenylbenzimidazole Sulfonic Acid (Ensulizole) is a water-soluble organic UV filter that primarily absorbs UVB radiation, helping to prevent sunburn. Its water solubility makes it suitable for lighter, less greasy sunscreen and daily moisturizer formulations.
Niacinamide (vitamin B3) is a water-soluble active that supports the skin barrier, regulates sebum, brightens hyperpigmentation, and reduces inflammation. It is widely tolerated across skin types and used in concentrations commonly ranging from 2% to 10%.
Titanium dioxide is an inorganic mineral compound used primarily as a physical (mineral) sunscreen agent that reflects and scatters UV radiation, and also serves as a white pigment and opacifier in cosmetic formulations. It is broadly photostable and considered gentle, making it common in products for sensitive and pediatric skin.
Allantoin is a naturally derived or synthetically produced compound used in skincare for its soothing, moisturizing, and keratolytic (skin-softening) properties. It promotes cell proliferation and helps calm irritation, commonly appearing in creams, lotions, and after-sun products.
Aggregated from the active ingredients in this product.
| Reported effect | How often | Notes |
|---|---|---|
| Skin dryness or barrier disruption with excessive contact | Uncommon | Frequent or prolonged exposure to water, especially hot or hard water, can disrupt the skin barrier and contribute to transepidermal water loss. |
| Irritation from impurities or hard water minerals | Rare | Reactions are attributed to contaminants, chlorine, or mineral content rather than water itself. |
| Mild skin irritation | Rare | Generally considered non-irritating; occasional mild reactions reported. |
| Contact allergy/sensitization | Very rare | Silicones are low-allergenicity; documented allergic reactions are exceptional. |
| Eye irritation | Rare | Possible transient stinging if product enters the eyes. |
| Mild transient stinging or irritation | Uncommon | More likely at high concentrations or on compromised/broken skin. |
| Tacky or sticky skin feel | Common | A cosmetic sensation rather than an adverse reaction, more noticeable at higher concentrations. |
| Contact dermatitis or allergic reaction | Rare | True allergy to glycerin is uncommon; patch-test positivity is infrequent. |
| Skin dehydration in very low humidity | Rare | In very dry environments humectants may draw water from deeper skin layers if not paired with an occlusive. |
| Contact irritation or mild stinging | Uncommon | Transient skin irritation, especially on sensitive or compromised skin. |
| Allergic contact dermatitis | Rare | Sensitization reported but relatively infrequent compared with other UV filters. |
| Photoallergic contact dermatitis | Rare | Reaction triggered by combined exposure to the ingredient and sunlight. |
| Potential endocrine/estrogenic activity | Very rare | Suggested by in vitro and animal studies; human relevance at cosmetic exposure levels remains uncertain. |
| White cast / cosmetic residue on skin | Common | Non-micronized particles can leave a visible white film, especially on darker skin tones. |
| Dryness or mild skin tightness | Uncommon | Due to its astringent nature, particularly in high concentrations. |
| Clogged pores / acne aggravation | Uncommon | More often attributed to occlusive base ingredients than to zinc oxide itself. |
| Contact irritation or stinging | Rare | Generally well tolerated; irritation often relates to other formulation components. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
| Ingredient | What it does |
|---|---|
| Water Solvent/vehicle | Water is the most common base ingredient in cosmetic formulations, serving as a solvent that dissolves other ingredients and forms the bulk of emulsions and aqueous solutions. It is generally considered safe and non-irritating. |
| Cyclopentasiloxane Emollient/silicone | Cyclopentasiloxane is a volatile cyclic silicone widely used in skincare and cosmetics to impart a smooth, silky feel and spreadability before evaporating, leaving no greasy residue. It also serves as a carrier and helps reduce tackiness in formulations. |
| Glycerin Humectant | Glycerin is a widely used humectant that attracts and retains water in the skin, helping to hydrate the stratum corneum and support barrier function. It is considered safe and well-tolerated across most skin types and concentrations. |
| Ethylhexyl Methoxycinnamate Key active UV filter (UVB sunscreen) | Ethylhexyl Methoxycinnamate (octinoxate) is a widely used organic UVB-absorbing sunscreen agent that protects skin from ultraviolet radiation. It is commonly incorporated into sunscreens and daily cosmetics with SPF claims. |
| Zinc Oxide Key active UV filter / skin protectant | Zinc oxide is a mineral (inorganic) UV filter that provides broad-spectrum protection against UVA and UVB radiation by scattering and absorbing light. It also has mild astringent and soothing properties and is used in sunscreens, diaper creams, and barrier preparations. |
| Phenylbenzimidazole Sulfonic Acid Key active UVB sunscreen filter | Phenylbenzimidazole Sulfonic Acid (Ensulizole) is a water-soluble organic UV filter that primarily absorbs UVB radiation, helping to prevent sunburn. Its water solubility makes it suitable for lighter, less greasy sunscreen and daily moisturizer formulations. |
| Dimethicone Crosspolymer Silicone-based texture enhancer/film former | Dimethicone Crosspolymer is a crosslinked silicone polymer used in skincare and cosmetics to provide a smooth, silky feel, absorb excess oil, blur the appearance of pores and fine lines, and improve product spreadability. It functions as a formulation ingredient rather than a therapeutic active. |
| Potassium Chloride Viscosity/texture modifier & osmotic agent | Potassium chloride is a mineral salt used in cosmetic formulations primarily as a viscosity-controlling agent and to balance the osmotic and electrolyte properties of aqueous products. It is generally considered safe and non-active at the concentrations used in skincare. |
| PEG-10 Dimethicone Silicone-based emulsifier/conditioning agent | PEG-10 Dimethicone is a water-dispersible, PEG-modified silicone used in cosmetics as an emulsifier, surfactant, and skin-conditioning agent that imparts a smooth, silky feel and helps stabilize emulsions. It is considered a formulation/base ingredient rather than a therapeutic active. |
| Caprylic/Capric Triglyceride Emollient / skin-conditioning agent | Caprylic/Capric Triglyceride is a lightweight emollient derived from coconut or palm oil and glycerin, used to soften skin, improve spreadability, and act as a solvent for oil-soluble ingredients. It is well-tolerated and serves primarily as a base ingredient rather than an active. |
| Niacinamide Key active Cell-communicating / barrier-repair active | Niacinamide (vitamin B3) is a water-soluble active that supports the skin barrier, regulates sebum, brightens hyperpigmentation, and reduces inflammation. It is widely tolerated across skin types and used in concentrations commonly ranging from 2% to 10%. |
| Fragrance Fragrance/masking agent | Fragrance refers to a blend of natural or synthetic aromatic compounds added to skincare products to impart a pleasant scent or mask the odor of other ingredients. It serves a sensory and formulation purpose rather than a therapeutic one. |
| Benzyl Alcohol Preservative / solvent | Benzyl alcohol is an aromatic alcohol used primarily as a preservative and solvent in cosmetic formulations, and it also provides mild fragrance and viscosity-reducing properties. It is approved for use as a preservative at concentrations up to about 1% in leave-on and rinse-off products. |
| Sodium Hydroxide pH adjuster | Sodium hydroxide (lye) is a strong alkaline compound used in small amounts to adjust and stabilize the pH of cosmetic formulations. At regulated low concentrations in finished products it is considered safe, though it is corrosive in concentrated form. |
| Magnesium Sulfate Emulsion stabilizer / viscosity-adjusting agent | Magnesium sulfate is an inorganic salt used in cosmetic formulations primarily as an emulsion stabilizer, viscosity controller, and bulking agent, particularly in water-in-oil systems. It is generally considered safe and well tolerated in topical skincare products. |
| Titanium Dioxide Key active UV filter / mineral sunscreen | Titanium dioxide is an inorganic mineral compound used primarily as a physical (mineral) sunscreen agent that reflects and scatters UV radiation, and also serves as a white pigment and opacifier in cosmetic formulations. It is broadly photostable and considered gentle, making it common in products for sensitive and pediatric skin. |
| Disteardimonium Hectorite Rheology modifier / suspending agent | Disteardimonium Hectorite is a modified clay (quaternized hectorite) used in cosmetic formulations as a thickener and gellant, primarily in anhydrous and oil-based systems such as sunscreens, foundations, and lipsticks. It helps suspend pigments and prevent ingredient separation. |
| Sucrose Distearate Emulsifier / surfactant | Sucrose Distearate is a sugar-derived nonionic emulsifier and emollient used to stabilize oil-in-water emulsions and improve skin feel in creams and lotions. It is considered a mild, biodegradable formulation ingredient rather than a treatment active. |
| Allantoin Key active Soothing/skin-conditioning agent | Allantoin is a naturally derived or synthetically produced compound used in skincare for its soothing, moisturizing, and keratolytic (skin-softening) properties. It promotes cell proliferation and helps calm irritation, commonly appearing in creams, lotions, and after-sun products. |
| Tocopheryl Acetate Key active Antioxidant | Tocopheryl acetate is a stable, esterified form of vitamin E used in skincare as an antioxidant and conditioning agent. It is converted to active tocopherol in the skin, helping protect against oxidative stress and supporting the skin barrier. |
| Benzoic Acid Preservative | Benzoic acid is an organic acid used primarily as an antimicrobial preservative in cosmetic and skincare formulations, most effective in acidic products (pH below ~5). It helps inhibit the growth of bacteria, yeast, and mold to extend product shelf life. |
| Disodium EDTA Chelating agent | Disodium EDTA is a chelating agent used in cosmetics to bind metal ions, improving product stability, preventing rancidity, and enhancing the efficacy of preservatives. It is a formulation/base ingredient rather than a treatment active. |
| PEG-4 Laurate Emulsifier/surfactant | PEG-4 Laurate is a polyethylene glycol ester of lauric acid used in cosmetics as a nonionic emulsifier, surfactant, and emollient that helps blend oil and water phases and improve product texture. It is a formulation/base ingredient rather than a therapeutic active. |
| PEG-4 Dilaurate Emulsifier/emollient | PEG-4 Dilaurate is a polyethylene glycol ester of lauric acid used as a nonionic emulsifier and emollient to stabilize oil-in-water formulations and improve skin feel. It serves as a base/formulation ingredient rather than a therapeutic active. |
| Sorbic Acid Preservative | Sorbic acid is a weak organic acid used in cosmetics primarily as an antimicrobial preservative, especially effective against molds and yeasts at acidic pH. It is typically used at low concentrations (around 0.1-0.2%) to extend product shelf life. |
| PEG-4 Humectant/solvent | PEG-4 is a low-molecular-weight polyethylene glycol used in skincare as a humectant, solvent, and emollient base ingredient that improves texture and helps dissolve other components. It functions primarily as a formulation aid rather than an active treatment ingredient. |
| Iodopropynyl Butylcarbamate Preservative | Iodopropynyl Butylcarbamate (IPBC) is a broad-spectrum antimicrobial preservative used in cosmetics and personal care products primarily to protect against fungal and bacterial contamination. It is typically used at very low concentrations within regulatory limits. |
| BHT Antioxidant/preservative | BHT (butylated hydroxytoluene) is a synthetic phenolic antioxidant used in small amounts to prevent oxidation and rancidity of oils, fragrances, and other unstable components, helping maintain product stability and shelf life. |
| Aluminum Hydroxide Opacifier/colorant & skin protectant | Aluminum hydroxide is an inorganic compound used in cosmetics primarily as an opacifying agent, mild absorbent, and coating for pigments (such as in sunscreens and color cosmetics). It can also act as a buffering and skin-protectant ingredient in some topical formulations. |
| Dimethicone Emollient/occlusive (silicone) | Dimethicone is a silicone-based polymer used in skincare to soften skin, smooth texture, and form a breathable protective barrier that reduces transepidermal water loss. It is widely used as a base/formulation ingredient rather than a therapeutic active. |
| Cucumis Sativus Juice Soothing/humectant | Cucumis Sativus (cucumber) juice is a water-rich botanical extract used in skincare for its mild hydrating, soothing, and refreshing properties. It contains water, vitamins, and trace minerals and is typically employed as a calming, conditioning component rather than a clinically potent active. |
| Cymbopogon Citratus Extract Key active Antioxidant/antimicrobial botanical extract | Cymbopogon Citratus (lemongrass) Extract is a plant-derived ingredient valued for its antioxidant, antimicrobial, and astringent properties, often used to support skin conditioning and as a natural fragrance component. It contains active compounds such as citral, geraniol, and flavonoids. |
| Propylene Glycol Humectant / solvent | Propylene glycol is a small glycol molecule widely used in skincare as a humectant, solvent, and penetration enhancer that helps attract water and dissolve other ingredients. It is considered a base/formulation ingredient rather than a therapeutic active. |
| Gluconolactone Key active Polyhydroxy acid (PHA) exfoliant/humectant | Gluconolactone is a polyhydroxy acid that gently exfoliates the skin surface, provides antioxidant and humectant benefits, and is often considered milder than alpha hydroxy acids. It is well tolerated, including by sensitive skin, due to its larger molecular size and slower penetration. |
| Sodium Benzoate Preservative | Sodium benzoate is a salt of benzoic acid used as a preservative in cosmetic and skincare formulations to inhibit the growth of bacteria, yeast, and fungi, particularly in acidic products. It is most effective at a pH below 5. |
| Potassium Sorbate Preservative | Potassium sorbate is the potassium salt of sorbic acid, used as a mild preservative to inhibit mold, yeast, and some bacterial growth in cosmetic formulations. It is most effective at acidic pH and is often combined with other preservatives for broad-spectrum protection. |
| Phenethyl Alcohol Preservative / fragrance | Phenethyl alcohol is an aromatic alcohol used in cosmetics primarily as a preservative and antimicrobial agent, and sometimes as a fragrance component with a mild rose-like scent. It is often combined with other preservatives to broaden antimicrobial coverage. |
| Caprylyl Glycol Humectant / skin-conditioning agent and preservative booster | Caprylyl glycol is a multifunctional emollient and humectant derived from caprylic acid that helps hydrate skin and enhance the efficacy of preservatives in formulations. It is widely used as a stabilizing and conditioning base ingredient rather than a therapeutic active. |
| Calcium Gluconate Buffering/skin-conditioning agent | Calcium gluconate is a calcium salt of gluconic acid used in topical formulations as a source of calcium, a buffering agent, and a skin-conditioning ingredient. It is also notably used medically as an antidote gel for hydrofluoric acid burns. |
| Alpha-Isomethyl Ionone Fragrance ingredient | Alpha-Isomethyl Ionone is a synthetic fragrance compound with a sweet, violet-like floral scent used to impart or enhance aroma in cosmetic and skincare formulations. It has no therapeutic skin benefit and serves purely an olfactory/sensory role. |
| Benzyl Benzoate Fragrance/Preservative/Solvent | Benzyl benzoate is a naturally occurring ester used in cosmetics as a fragrance component, solvent, plasticizer, and fixative; it also has antimicrobial and acaricidal properties. In medicine it is used as a topical treatment for scabies and lice. |
| Benzyl Salicylate Fragrance/UV-absorber | Benzyl salicylate is an aromatic ester used primarily as a fragrance ingredient and, to a lesser extent, as a UV-light absorber in cosmetic formulations. It imparts a faint floral, balsamic scent and helps stabilize fragrance compositions. |
| Citronellol Fragrance ingredient | Citronellol is a naturally occurring monoterpene alcohol used as a fragrance and flavoring agent, providing a rose-like, citrusy scent in cosmetics and personal care products. It is found in essential oils such as rose, geranium, and citronella. |
| Geraniol Fragrance/aroma compound | Geraniol is a naturally occurring terpene alcohol used in cosmetics primarily as a fragrance ingredient and for its pleasant rose-like scent. It also has mild antioxidant and antimicrobial properties but is included mainly for olfactory rather than therapeutic purposes. |
| Hexyl Cinnamal Fragrance ingredient | Hexyl Cinnamal is a synthetic aromatic compound used as a fragrance and masking agent in cosmetic and skincare formulations, valued for its mild floral, jasmine-like scent. It is one of the 26 fragrance allergens required to be labeled in the EU. |
| Limonene Fragrance/solvent | Limonene is a naturally occurring monoterpene derived from citrus peel oils, commonly used as a fragrance component and solvent in cosmetic formulations. On exposure to air it oxidizes, forming compounds with greater sensitizing potential. |
| Linalool Fragrance/masking agent | Linalool is a naturally occurring terpene alcohol found in lavender, coriander, and many other plants, used in skincare primarily as a fragrance component. It readily oxidizes upon exposure to air, forming sensitizing hydroperoxides. |
Key active = does the main work. Ingredient explanations are drawn from public databases & literature.
Peer-reviewed papers on the active ingredients in this product, via PubMed.