Below is every ingredient in Biluma Radiance Serum 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.
L-Ascorbic Acid is the biologically active form of vitamin C used topically as a potent antioxidant that helps neutralize free radicals, supports collagen synthesis, and can reduce hyperpigmentation. Its efficacy depends on low pH (typically below 3.5) and stable formulation, as it readily oxidizes when exposed to light, air, and heat.
Alpha arbutin is a naturally derived hydroquinone derivative that inhibits tyrosinase, reducing melanin production. It is used to address hyperpigmentation, dark spots, and uneven skin tone.
4-Butylresorcinol is a resorcinol-derivative used in topical formulations to inhibit tyrosinase and reduce melanin production, helping to fade hyperpigmentation and even skin tone. It is generally considered one of the more potent skin-lightening actives among resorcinol derivatives.
Aggregated from the active ingredients in this product.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation or stinging | Common | More likely at higher concentrations or on compromised/sensitive skin |
| Allergic contact dermatitis | Uncommon | Recognized contact allergen; confirmed via patch testing |
| Irritant contact dermatitis | Uncommon | Non-allergic irritation, often dose-dependent |
| Worsening of pre-existing eczema or barrier-impaired skin | Rare | Penetration-enhancing effect may increase reactivity |
| Systemic toxicity from topical use | Very rare | Reported mainly with extensive application on broken skin, especially in infants or burn patients |
| Mild transient stinging or irritation | Uncommon | More likely on compromised or sensitive skin, especially at higher concentrations. |
| Skin dryness or tightness | Rare | Possible with high concentrations in leave-on products. |
| Redness or erythema | Uncommon | Typically mild and resolves after discontinuation. |
| Transient stinging or burning | Uncommon | Usually short-lived, especially on broken or irritated skin. |
| 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 stinging or tingling on application | Common | Often related to the low pH required for stability and absorption, usually transient. |
| Skin irritation, redness, or dryness | Uncommon | More likely at higher concentrations (15-20%) or on sensitive/compromised skin. |
| Contact dermatitis | Rare | True allergic reactions to ascorbic acid are infrequent; irritant reactions are more common. |
| Yellow-orange skin staining from oxidized product | Rare | Caused by degraded/oxidized formulation rather than a biological effect; harmless and washes off. |
| Paradoxical hyperpigmentation | Very rare | Isolated reports, generally in predisposed individuals or with irritation-induced post-inflammatory pigment. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
| Ingredient | What it does |
|---|---|
| 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. |
| Pentylene Glycol Humectant / solvent / preservative-booster | Pentylene glycol is a glycol used in cosmetics as a humectant and solvent that also enhances the antimicrobial efficacy of formulations, helping reduce reliance on traditional preservatives. It improves skin hydration and aids the delivery and stability of other ingredients. |
| 1,3 Butylene Glycol Humectant / solvent | 1,3-Butylene glycol is a small diol used in skincare as a humectant, solvent, and viscosity modifier that helps retain moisture and improve product texture. It also has mild antimicrobial properties that can aid preservation. |
| 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. |
| L-Ascorbic Acid Key active Antioxidant / brightening active | L-Ascorbic Acid is the biologically active form of vitamin C used topically as a potent antioxidant that helps neutralize free radicals, supports collagen synthesis, and can reduce hyperpigmentation. Its efficacy depends on low pH (typically below 3.5) and stable formulation, as it readily oxidizes when exposed to light, air, and heat. |
| Ethoxydiglycol Solvent / penetration enhancer | Ethoxydiglycol (diethylene glycol monoethyl ether) is a glycol ether used in cosmetic formulations primarily as a solvent and viscosity reducer that helps dissolve active ingredients and improve their skin penetration. It is considered a formulation aid rather than a therapeutic active. |
| Alpha-Arbutin Key active Skin-brightening agent | Alpha arbutin is a naturally derived hydroquinone derivative that inhibits tyrosinase, reducing melanin production. It is used to address hyperpigmentation, dark spots, and uneven skin tone. |
| Alcohol Solvent / penetration enhancer | Alcohol (typically ethanol or denatured alcohol) is used in skincare as a solvent, antimicrobial agent, and to improve product spreadability and rapid drying. It also enhances penetration of other ingredients and gives a lightweight feel to formulations. |
| Citrus Grandis Extract Skin-conditioning / antioxidant | Citrus Grandis (grapefruit) Extract is derived from grapefruit and is used in cosmetics for its antioxidant, soothing, and conditioning properties. It contains vitamin C, flavonoids, and other phytochemicals. |
| Parfum Fragrance | Parfum (fragrance) is a blend of aromatic compounds added to cosmetic products to impart a pleasant scent or mask the base odor of other ingredients. It serves a sensory/formulation purpose rather than providing any skin benefit. |
| 4-Butylresorcinol Key active Skin-brightening agent (tyrosinase inhibitor) | 4-Butylresorcinol is a resorcinol-derivative used in topical formulations to inhibit tyrosinase and reduce melanin production, helping to fade hyperpigmentation and even skin tone. It is generally considered one of the more potent skin-lightening actives among resorcinol derivatives. |
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.