Hyperpigmentation Serum
What it's good for
Key actives from our research database. Click any to read the full evidence dossier.
A fruit-derived AHA that exfoliates and antioxidizes. It shares the same basic mechanism as glycolic and lactic acid but is weaker gram-for-gram; in practice you'll see it doing dual duty (a little exfoliation plus pH stabilisation) in multi-acid toners and serums. When it appears low on an ingredient list, it's adjusting pH; higher up, it's contributing real exfoliation.
Good for: Exfoliating, Antioxidant
A gentler exfoliator that also hydrates as it works. Good entry point if you have sensitive skin and want to try acids.
Good for: Exfoliating, Hydrating
A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Good for: Brightening, Barrier repair, Anti-inflammatory
Fades stubborn dark patches like melasma and deep marks left behind by acne or hormonal shifts. The one to reach for when other brighteners haven't worked.
Good for: Brightening
Evidence behind the ingredients
Real citations from our research database, one per tracked active in this product. Click any ingredient name to read its full evidence dossier.
A fruit-derived AHA that exfoliates and antioxidizes. It shares the same basic mechanism as glycolic and lactic acid but is weaker gram-for-gram; in practice you'll see it doing dual duty (a little exfoliation plus pH stabilisation) in multi-acid toners and serums. When it appears low on an ingredient list, it's adjusting pH; higher up, it's contributing real exfoliation.
Tang SC, Yang JH. Dual Effects of Alpha-Hydroxy Acids on the Skin. Molecules. 2018;23(4):863.
Yamamoto Y, Uede K, Yonei N, Kishioka A, Ohtani T, Furukawa F. Effects of alpha-hydroxy acids on the human skin of Japanese subjects: the rationale for chemical peeling. Journal of Dermatology. 2006 Jan;33(1):16-22. — Clinical-mechanistic study in Japanese subjects demonstrating AHA (including citric acid class) keratolytic and epidermal renewal effects as rationale for chemical peeling.
Bernstein EF, Underhill CB, Lakkakorpi J, et al. Citric acid increases viable epidermal thickness and glycosaminoglycan content of sun-damaged skin. Dermatologic Surgery. 1997 Aug;23(8):689-694. — Mechanistic study showing topical citric acid increased viable epidermal thickness and dermal glycosaminoglycans in sun-damaged skin, similar to glycolic acid and retinoic acid.
A gentler exfoliator that also hydrates as it works. Good entry point if you have sensitive skin and want to try acids.
Fanning N et al., Treatment of mild-to-moderate facial cutaneous aging using a combination peel containing 6% trichloroacetic acid and 12% lactic acid, Journal of Cosmetic Dermatology 2023;22(11):3033-3041 — three monthly peels significantly improved clarity, pigmentation, fine lines, roughness in 32 subjects
Tang SC, Yang JH, Dual effects of alpha-hydroxy acids on the skin, Molecules 2018;23(4):863 — effect concentration-dependent
Babilas P et al., Cosmetic and dermatologic use of alpha hydroxy acids, JDDG: Journal der Deutschen Dermatologischen Gesellschaft 2012 — supports AHAs including lactic acid for photoaging, pigmentation, and barrier effects
A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.
Moro F et al., Skin Cancer Prevention and Antiaging: Role of Nicotinamide, International Journal of Molecular Sciences 2026
Passeron T et al., An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide, Dermatology and Therapy (Heidelberg) 2026
Vergilio MM et al., Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing, Current Medicinal Chemistry 2025
+−1 more ingredient
Fades stubborn dark patches like melasma and deep marks left behind by acne or hormonal shifts. The one to reach for when other brighteners haven't worked.
Liang Y et al., Comparative efficacy and safety of tranexamic acid for melasma by different administration methods: A systematic review and network meta-analysis, Journal of Cosmetic Dermatology 2024 — oral TXA + topical agents most effective delivery route
Tranexamic Acid Ameliorates Skin Hyperpigmentation by Downregulating Endothelin-1 Expression in Dermal Microvascular Endothelial Cells, Annals of Dermatology 2024;36(3):151-162 — mechanism study showing oral TXA suppresses endothelin-1 in vascular endothelial cells
Calacattawi R, Alshahrani M, Aleid M et al., Tranexamic acid as a therapeutic option for melasma management: a meta-analysis and systematic review of randomized controlled trials, Journal of Dermatological Treatment 2024;35(1):2361106 — pooled RCT evidence that tranexamic acid significantly reduces melasma severity via plasmin-inhibition of UV-triggered melanogenesis
Sources: 10 clinical journals and regulatory databases across the US, EU, Korea, Japan, and China. Every entry points to a specific document. See methodology for the full list and what each outcome label means.
Similar comparisons
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