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Anti-Pigmentation Evidence 
01 / 04
01 / 04 Anti-Pigmentation
KOJIVENE CREAM
RAYANS
50G
Curated by DermaVue Clinical Board
₹550
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Clinical Efficacy Markers
- Kojic Acid
- Alpha Arbutin
- Vitamin C
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The Science of Anti-Pigmentation
RAYANS KOJIVENE CREAM (50G)
Drug Facts
Active Ingredients
Full Ingredient List
Aqua, Vitamin C, Isostearyl Myristate, Kojic Acid, Dipalmitate, Alpha Arbutin, Ethylene Glycol, Cetearyl alcohol and Cetostearyl, Glyceryl Monostearate, Glycerin, Stearic, Allantoin, Phenoxyethanol & Ethylhexylglycerin, Fragrance, Sodium Metabisulphite
INGREDIENT · TYROSINASE INHIBITOR, ANTIOXIDANT
Kojic Acid
Evidence
Function
May help support melanin regulation through tyrosinase enzyme inhibition
How it works
Kojic acid research suggests it functions as a competitive inhibitor of the tyrosinase enzyme, which catalyzes the conversion of tyrosine to DOPA and subsequently to melanin. Studies indicate the compound may chelate copper cofactors essential for tyrosinase activity. The mechanism appears to involve suppression of melanin biosynthesis at multiple enzymatic steps, potentially contributing to skin-lightening properties in hyperpigmented conditions.
⚑ For Indian skin (Fitzpatrick IV–VI)
In Fitzpatrick IV-VI skin types prevalent in Kerala, research indicates kojic acid may help support management of melasma and post-inflammatory hyperpigmentation (PIH), conditions with higher incidence in darker phototypes. Studies suggest the ingredient demonstrates tyrosinase inhibition comparable to established comparators, though individual response variation is expected across Indian populations. The tropical Kerala climate with high UV exposure increases melanin stimulus; kojic acid formulations should incorporate robust photoprotection (SPF 30+) to prevent paradoxical darkening. PIH risk remains a consideration in inflammatory skin conditions; patch testing is advisable before full-face application in Fitzpatrick V-VI individuals.
Effective concentration
1–5 % w/w (optimal ~2% w/w)
Clinical evidence
Kojic acid was used as a positive control standard for tyrosinase inhibition assays, with the study indicating that natural extract fractions demonstrated enzyme inhibitory activities. Research suggests kojic acid remains a validated reference compound for evaluating skin-lightening potential of botanical ingredients.
Narra J Narra J. 2025. PubMed →
HPLC analytical methods were developed and validated for kojic acid quantification in cosmetic formulations, demonstrating high precision and accuracy. Studies indicate kojic acid is frequently formulated in combination with ascorbic acid and niacinamide, suggesting potential synergistic applications in pigmentation management products.
BMC Chemistry BMC Chemistry. 2026. PubMed →
Kojic acid was employed as a positive control reference standard for evaluating tyrosinase inhibitory activity of marine-derived compounds. Research indicates that natural ingredient efficacy for skin hyperpigmentation is benchmarked against kojic acid's established inhibitory profile.
Scientific Reports Scientific Reports. 2026. PubMed →
Natural plant extracts demonstrated tyrosinase inhibition (90% at 2.5 mg/mL) that research indicates was comparable to kojic acid, suggesting its continued relevance as a reference standard for skin-brightening efficacy evaluation.
Applied Biochemistry and Biotechnology Applied Biochemistry and Biotechnology. 2026. PubMed →
Kojic acid was combined with arbutin in a supramolecular gel system that demonstrated strong antioxidant activity (>85% DPPH scavenging) and inhibitory effects on peroxidase enzymes. Research suggests that kojic acid in formulated systems may work synergistically with other bioactive compounds to support melanin production control.
Macromolecular Bioscience Macromolecular Bioscience. 2026. PubMed →
Pregnancycaution
Photosensitivityno
Pairs well with
Ascorbic Acid · Niacinamide · Arbutin · Alpha-Hydroxy Acids · Sunscreen (chemical and physical)
Avoid combining with
Benzoyl Peroxide · Strong oxidizing agents
INGREDIENT · DEPIGMENTING AGENT / TYROSINASE INHIBITOR
Alpha-Arbutin
also known as Alpha-Arbutin, α-Arbutin
Evidence
Function
May help support skin brightening and even tone through tyrosinase inhibition and melanin synthesis modulation
How it works
Alpha-arbutin undergoes hydrolysis to release hydroquinone, which research indicates may inhibit tyrosinase enzyme activity and potentially reduce melanin production in melanocytes. Studies suggest the ingredient works through competitive inhibition of tyrosinase, the key enzyme responsible for melanin synthesis. The mechanism may involve downregulation of melanin-synthesis-related genes, supporting its use in addressing hyperpigmentation concerns.
⚑ For Indian skin (Fitzpatrick IV–VI)
Alpha-arbutin has been shown in research to support melanin reduction across diverse skin types and may be particularly relevant for Fitzpatrick IV-VI individuals in Kerala where high UV exposure and genetic predisposition contribute to melasma and PIH. Studies indicate the ingredient's efficacy is not compromised in darker skin phenotypes; however, practitioners should monitor for delayed or uneven depigmentation patterns common in Indian skin, as PIH risk remains significant during treatment. The tropical Kerala climate with intense UVB exposure necessitates concurrent daily broadspectrum sunscreen use (SPF 50+) and consideration of sequential therapy; alpha-arbutin alone may be insufficient for moderate-to-severe melasma in this population. Combining with other tyrosinase inhibitors or tranexamic acid may enhance efficacy, though patch testing is advisable given variable skin sensitivity in pigmented populations.
Effective concentration
2–4 % (optimal ~2%)
Clinical evidence
Research indicates alpha-arbutin was used as a comparative standard for tyrosinase inhibitory activity and skin-brightening applications. The study evaluated Reishi extract against alpha-arbutin, suggesting both ingredients have potential for anti-aging and depigmenting formulations.
Authors not listed International Journal of Cosmetic Science. 2026. PubMed →
Studies indicate certain botanical compounds demonstrated tyrosinase inhibition superior to alpha-arbutin in vitro, with liquiritigenin reducing pigmentation by 22-41% in melanoma cells. The research suggests alpha-arbutin remains a relevant comparative benchmark for depigmenting efficacy evaluation.
Authors not listed Natural Product Research. 2026. PubMed →
Research indicates that Cinnamomum burmanni essential oil nanoemulgel demonstrated anti-photoaging effects comparable to alpha-arbutin in vivo and through computational modeling. Findings suggest alpha-arbutin remains a relevant clinical standard for evaluating anti-aging and depigmenting formulation efficacy.
Authors not listed Natural Product Research. 2025. PubMed →
Studies indicate tranexamic acid demonstrated additive melanin-inhibitory effects when combined with alpha-arbutin in B16 melanoma cells. Research suggests the combination may enhance depigmenting efficacy, supporting sequential or combination therapeutic approaches for melasma management.
Authors not listed Cell Biology International. 2026. PubMed →
Research indicates advanced nanocarrier encapsulation of alpha-arbutin achieved 95.65% melanin inhibition rate in zebrafish models and demonstrated enhanced skin penetration and melanin reduction in C57BL/6J mice. Studies suggest improved delivery systems may enhance alpha-arbutin's transdermal bioavailability and depigmenting efficacy compared to conventional formulations.
Authors not listed ACS Applied Materials & Interfaces. 2025. PubMed →
Pregnancycaution
Photosensitivityno
Pairs well with
Tranexamic Acid · Kojic Acid · Vitamin C (Ascorbic Acid) · Niacinamide · Glycolic Acid · Salicylic Acid
Avoid combining with
Benzoyl Peroxide (may reduce efficacy) · High concentrations of vitamin A derivatives (retinol/retinoids may increase irritation risk)
INGREDIENT · ANTIOXIDANT, ANTI-AGING, SKIN BRIGHTENING
Ascorbic Acid
also known as Vitamin C
Evidence
Function
Antioxidant protection, collagen synthesis support, and melanin regulation
How it works
Ascorbic acid functions as a free radical scavenger, reducing oxidative stress that contributes to photoaging and hyperpigmentation. Research indicates it may support collagen cross-linking and stabilization through its role as a cofactor in hydroxylation reactions. Studies suggest ascorbic acid derivatives may suppress inflammatory cytokine pathways including interleukin-33, potentially benefiting barrier-compromised skin states. Evidence indicates it may modulate melanin synthesis pathways, though efficacy is dependent on formulation stability and skin penetration.
⚑ For Indian skin (Fitzpatrick IV–VI)
Ascorbic acid has been shown to support barrier function and may help address post-inflammatory hyperpigmentation (PIH), a significant concern in Fitzpatrick IV-VI skin types prevalent in Kerala. Studies on ascorbic acid derivatives suggest they may suppress inflammatory mediators that exacerbate PIH development in darker skin tones. In Kerala's humid tropical climate, the high instability of pure ascorbic acid necessitates stabilized derivatives such as tetrahexyldecyl ascorbate for effective formulation and penetration. Patients with Fitzpatrick IV-VI skin should be monitored for potential irritation during initial use, particularly in combination with other actives, and formulations should be pH-controlled (pH 3.5 or lower for efficacy without excessive irritation). Evidence suggests that well-formulated ascorbic acid preparations may support epidermal turnover and dermal matrix organization, which may help improve barrier resilience in darker skin types prone to reactive conditions.
Effective concentration
10–20 % (for pure ascorbic acid; derivatives may be effective at lower concentrations) (optimal ~15% (for pure ascorbic acid; derivatives may be effective at lower concentrations))
Clinical evidence
Tetrahexyldecyl ascorbate, a lipid-soluble derivative of ascorbic acid, has been shown to have superior stability and skin-mimicking properties compared to native ascorbic acid. Studies suggest this derivative may address both extrinsic photoaging and intrinsic hyperpigmentation without the formulation challenges of parent compound ascorbic acid.
Not specified in abstract Journal of Cosmetic Dermatology. 2026. PubMed →
Glyceryl ascorbate derivatives (2GA16) demonstrated dose-dependent suppression of interleukin-33 expression and increased expression of filaggrin and involucrin in keratinocytes. Research indicates these modifications may support epidermal barrier formation and reduce inflammatory cytokine production relevant to atopic and reactive dermatitis.
Not specified in abstract Skin Pharmacology and Physiology. 2026. PubMed →
Ascorbic acid has been shown to induce epidermal turnover and support synthesis of well-aligned extracellular matrix through perivascular niche cells in human skin equivalents. Evidence suggests these mechanisms may improve skin barrier function and dermal elasticity through cell-to-cell communication pathways.
Not specified in abstract EMBO Reports. 2026. PubMed →
Ascorbic acid showed linear concentration-response antioxidant activity in FRAP assays with half-maximal effective concentration values consistent with literature standards. Research indicates ascorbic acid demonstrates reliable measurable antioxidant capacity suitable for cosmetic formulation stability profiling and comparative analysis.
Not specified in abstract MethodsX. 2026. PubMed →
Pregnancycaution
Photosensitivityno
Pairs well with
Hyaluronic Acid · Glycerin · Vitamin E · Ferulic Acid · Niacinamide · Peptides
Avoid combining with
Benzoyl Peroxide · High pH ingredients · Retinol (may reduce stability; use in separate formulations) · Sodium Bicarbonate · Iron or copper ions (destabilizing)
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