Ingredients that brighten post-inflammatory pigmentation, melasma, and dull skin tone. From azelaic acid to thiamidol.
51 ingredients in database · 29 with tier A/B evidence · 26 safe in pregnancy
Brightening ingredients act at different steps of melanin synthesis. The classic gold standard is hydroquinone 4%, but it is prescription-only and banned in EU cosmetics due to side effects and the risk of ochronosis. Among OTC options, azelaic acid 10–20% delivers the best evidence base: clinical trials in melasma show it performs on par with hydroquinone, and it is safe in pregnancy.
Thiamidol is a new selective human tyrosinase inhibitor by Beiersdorf. Head-to-head clinical work showed efficacy comparable to hydroquinone and nearly 100× the enzyme affinity of kojic acid. Tranexamic acid 2–5% topically or 500 mg orally is a strong option for stubborn melasma, especially combined with SPF and azelaic acid.
Vitamin C works in several forms. L-ascorbic acid is the most potent but unstable, needs pH 2.5–3.5 and dark packaging. Derivatives (sodium ascorbyl phosphate, tetrahexyldecyl ascorbate, ethyl ascorbic acid) are more stable but less active. Vitamin C brightens post-inflammatory pigmentation and reinforces photoprotection – the key morning pairing with SPF.
Arbutin, alpha-arbutin, kojic acid, and glabridin are gentler tyrosinase inhibitors. They work, but effects take 3–4 months of consistent use to show.
One rule to follow: any brightening routine is pointless without daily SPF 30–50. UV triggers new pigmentation faster than actives can lift what is already there.
3-O-Ethyl Ascorbic Acid
Stable vitamin C derivative. Better pH stability than L-ascorbic acid; penetrates skin and converts to the active form. Antioxidant and brightening effect.
L-Ascorbic Acid (Vitamin C)
Water-soluble antioxidant that inhibits tyrosinase and stimulates collagen synthesis. Unstable upon oxidation, requiring careful storage.
N-Acetyl Glucosamine
Amino sugar, a precursor of hyaluronic acid. Inhibits tyrosinase, so it lightens post-acne marks and melasma, especially when paired with niacinamide. Also supports skin HA synthesis.
Azelaic Acid
Naturally derived dicarboxylic acid with antibacterial, sebum-regulating, and depigmenting properties. One of the few prescription-grade ingredients considered safe in pregnancy.
Alpha-Arbutin
Alpha isomer of arbutin. An order of magnitude more active than beta-arbutin with the same safety profile. Modern lightening cosmetics standard.
Evigrade currently tracks 51 ingredients in the «brightening» category. Of those, 29 carry evidence tier A or B.
26 ingredients in this category are flagged as safe during pregnancy at typical cosmetic concentrations. 2 should be avoided. Always confirm the choice with an OB-GYN.
35 ingredients in this category show both low irritation potential and low allergen risk, making them safe even for reactive and sensitised skin. A patch test is still advisable before first use.
Start with a single high-evidence ingredient (tier A or B) at a low concentration, 2–3 times per week. After 2–3 weeks without reaction, frequency can be increased. Do not introduce two new actives at once – if skin reacts, you won't know which one caused it.
Other categories
Stable vitamin C derivative. Better pH stability than L-ascorbic acid; penetrates skin and converts to the active form. Antioxidant and brightening effect
Tyrosinase and TRP-1 inhibitor, known as Rucinol. Works on both melanin synthesis steps, so it delivers stronger depigmentation
Water-soluble antioxidant that inhibits tyrosinase and stimulates collagen synthesis. Unstable upon oxidation, requiring careful storage
Amino sugar, a precursor of hyaluronic acid. Inhibits tyrosinase, so it lightens post-acne marks and melasma, especially when paired with niacinamide. Also supports skin HA synthesis
Naturally derived dicarboxylic acid with antibacterial, sebum-regulating, and depigmenting properties. One of the few prescription-grade ingredients considered safe in pregnancy
Alpha isomer of arbutin. An order of magnitude more active than beta-arbutin with the same safety profile. Modern lightening cosmetics standard
Natural glycoside derivative of hydroquinone. A skin-lightening agent that inhibits tyrosinase. Milder than hydroquinone, works on skin through gradual hydrolysis
Lipid-soluble ester of vitamin C with palmitic acid. More stable than L-ascorbic acid, does not require acidic pH, and fits oil and emulsion formulas. However, hydrolysis in skin is limited and true vitamin C bioactivity is reduced. Often used as an antioxidant to stabilise oils in formulation
Stable glycoside of ascorbic acid. Converted to vitamin C by alpha-glucosidase after skin penetration
Oil-soluble vitamin C derivative. More stable than L-ascorbic acid with better penetration through the lipid barrier. Converts to ascorbic acid inside the skin
Proteolytic enzyme from pineapple stems. Breaks keratin bridges and delivers a light chemical-peel effect with an anti-inflammatory bonus
Alpha-hydroxy acid from grapes and other fruits. The largest AHA molecule after mandelic acid – penetrates slowly and irritates less than glycolic. Used as a mild exfoliant and pH adjuster. More often found in combination with other acids than as a sole active
Polyhydroxy acid, a structural sibling of lactobionic acid. Used in very gentle acid formulations for sensitive skin and post-procedure recovery. A larger molecule than AHAs, it acts mostly at the surface without provoking stinging or redness. Moisturising effect from multiple hydroxyl groups
The strongest topical depigmenting agent. Inhibits tyrosinase and exerts cytotoxic effects on melanocytes. Prescription-only in many countries
Isoflavonoid from licorice root. Inhibits tyrosinase and suppresses inflammation. Main active in depigmenting products based on licorice extract
Alpha-hydroxy acid (AHA) with the smallest molecular weight in the group. Accelerates desquamation, evens skin tone and texture
Tripeptide of glutamate, cysteine and glycine – key intracellular antioxidant. In cosmetics it promises skin brightening through tyrosinase inhibition and a switch in melanin synthesis
Polyhydroxy acid (PHA) – a gentle AHA alternative. Its large molecular size slows penetration, reducing irritation. Also hydrates through hygroscopicity
Fermented milk product – source of lactic acid, lactose, proteins, calcium. In cosmetics it works as a mild humectant with a gentle exfoliating effect from lactate. Avoid in milk-protein allergic patients. Pregnancy-safe
Spray-dried yogurt – a concentrated form with milk proteins, lactose, lactic acid, calcium. More stable than liquid yogurt and easier for emulsions. Avoid in milk-protein allergic patients. Pregnancy-safe
Water-soluble azelaic acid derivative. Gentler but less effective than pure azelaic acid. Used in OTC brightening products
Lipophilic derivative of salicylic acid with a caprylic (C8) chain. Unlike plain salicylic acid, it penetrates deeper into sebaceous gland openings thanks to its lipid solubility. Developed by L'Oreal and actively used in the La Roche-Posay Effaclar line. Targets comedones and post-acne marks more than inflammation
Byproduct of Aspergillus fungal fermentation. Chelates copper, inhibiting tyrosinase. One of the early depigmenting agents with proven efficacy
Stable water-soluble vitamin C derivative. Weaker antioxidant activity than L-ascorbic acid, but it spares sensitive skin and works at neutral pH
Oil from rosehip seeds, rich in linoleic and alpha-linolenic acids plus trace amounts of trans-retinoic acid. Used for scars and pigmentation
AHA with a large molecule (bigger than glycolic acid). Penetrates skin more slowly, making it gentler. Suitable for darker phototypes where glycolic acid more often triggers post-inflammatory hyperpigmentation
AHA with dual action: acid exfoliation and moisturization via hygroscopicity. Gentler than glycolic acid
Water-soluble stable vitamin C derivative. Skin phosphatase releases active ascorbic acid. Active at pH 7 – does not require acidic pH
Vitamin B3 form with a wide action spectrum: brightens pigmentation, strengthens the barrier, minimizes pores, and reduces sebum production
Synthetic 9-amino-acid peptide – an α-MSH receptor inhibitor, a brightening component. Reduces melanin synthesis in melanocytes. Pregnancy-safe
Proteolytic enzyme from papaya. Gently dissolves keratin of dead cells and works as a gentle alternative to acid peels
Beta-hydroxy acid (BHA) with lipophilic properties: penetrates sebaceous glands, dissolves plugs, and exerts anti-inflammatory effects
Selective human tyrosinase inhibitor by Beiersdorf. Per the manufacturer data, 100 times more potent than kojic acid on the human enzyme
Synthetic lysine derivative. Suppresses plasminogen activation in keratinocytes, reducing prostaglandin synthesis and melanocyte activity
Retinoic acid – the most active topical form of vitamin A. A prescription drug and the gold standard for topical anti-aging and acne treatment
Tyrosinase inhibitor by DSM, known under the Symwhite 377 brand. Works against hyperpigmentation and adds antioxidant protection
Black tea ferment with a symbiotic culture of Saccharomyces yeast and Xylinum bacteria (kombucha). Contains organic acids, polyphenols and microbial metabolites. Light antioxidant action. Pregnancy-safe
Fermented rice filtrate with amino acids and B vitamins. A traditional Japanese cosmetics component, related to sake and koji
Fermentation product of Galactomyces fungi. Contains vitamins, organic acids, and enzymes. Popular in Asian skincare (Missha First Treatment Essence)
Yeast fermentation product containing amino acids, vitamins, and minerals. The core ingredient in SK-II Pitera. Moisturizes and evens skin texture
Mild acid from rice bran and legumes. Works as a metal chelator, antioxidant and gentle exfoliant for sensitive skin
Antioxidant and melanin degrader, a hydroquinone alternative for stubborn melasma. The main practical downside is a sharp unpleasant odor
Extract containing glycyrrhizin, glabridin, and licochalcone A. An anti-inflammatory and brightening ingredient. Glabridin is considered separately as a pure compound
Turmeric root extract with curcuminoids. Antioxidant with anti-inflammatory potential; concentrated formulas can stain skin yellow
Artichoke leaf extract – a source of cynarine and chlorogenic acid. Antioxidant action, helps tighten pores. Pregnancy-safe
Extract from the white lily bulb, traditionally used in brightening cosmetics to correct pigmentation. Sensitive skin may show an allergic reaction
Bulb extract of sea daffodil (Pancratium maritimum). Contains the alkaloids pancratistatin and lycorine. Marketing promotes anti-aging and slimming effects, but clinical human evidence is limited – most data are in vitro. Safe topically during pregnancy
Pteris multifida fern extract – a source of flavonoids with antioxidant and anti-inflammatory action. Pregnancy-safe
Rice bran extract with gamma-oryzanol, tocopherols and ferulic acid. A traditional component of Japanese and Korean cosmetics for glow
Bird's-foot trefoil Lotus corniculatus seed extract – a source of flavonoids and tannins. Antioxidant and tone-evening action. Pregnancy-safe
An alpha-hydroxy acid (AHA) found in apples and other fruits. Molecularly larger than glycolic acid, it penetrates more gently. Used in formulations as a mild exfoliant and pH adjuster. Popular in 'fruit acid' peels. Rarely used as a sole active, more often combined with glycolic, lactic, and mandelic acids