Ingredient glossary
Tetrahydrocurcumin
On your shelf ✓What Tetrahydrocurcumin does for your skin, who it suits, and what to watch for.
INCI: Tetrahydrocurcumin · Also: THC, SabiWhite
In short: Tetrahydrocurcumin delivers brightening and antioxidant, earns its place for pigmentation and melasma, and the evidence behind it is moderate. One thing to know: clear it with your doctor if pregnant.
- What it does
- Brightening, antioxidant
- Best for
- Pigmentation, melasma
- Watch out
- Clear it with your doctor if pregnant
- Evidence
- Moderate
- How long
- Never measured
The molecule
The Glow take
Genuinely worth a spot in your routine.
When your goal is fading dark spots and evening out tone, Tetrahydrocurcumin pulls genuine weight, with a solid amount of evidence behind it. Easy to slot into almost any routine.
— Maya
What it does
- brightening
- antioxidant
- anti inflammatory
moderate evidenceA randomized double blind trial showed zero point twenty five percent tetrahydrocurcumin cream significantly reduced Mexameter melanin readings with no adverse reactions while four percent hydroquinone produced more irritation despite its stronger effect.
On a label: usually effective at 0.25%.
Who it's for, and who should skip it
Tends to suit
- pigmentation
- melasma
- photoaged
Approach with care
- very sensitive
- compromised barrier
- Clogs poresLow
- Irritation riskLow
How it fits each skin type
- DryNeutral
- CombinationNeutral
- OilyNeutral
- SensitiveTake care
Often chosen for pigmentation, melasma, photoaged. Take extra care if any of these apply to you: compromised barrier.
Where it fits in your routine
Nobody has published how long this takes to work.
What is known, and what is missing
Measured on: pigment lightening - melanin index or investigator-graded tone (the brightening job this base scores 7).
The 50-subject, four-week, 0.25% cream versus 4% hydroquinone comparison this row rests on cannot be located in the indexed literature: PubMed has no such trial under tetrahydrocurcumin or tetrahydrocurcuminoid, Crossref registers no DOI for its title, and the only place it is cited with authority is the product page for the supplier's tetrahydrocurcumin ingredient, where it appears as a one-sentence claim with no journal or date. Weekly Mexameter readings and a p-value quoted from an unlocatable document are not something a reader can be handed as a wait. The published human record is thinner and negative on timing: a ten-subject vitiligo study found tetrahydrocurcuminoid cream added to targeted narrowband UVB no better than UVB alone at 8 or 12 weeks. The rest is mechanism - melanogenesis inhibition in B16F10 melanoma cells, and reduced melanin plus wrinkle change in UV-irradiated mice - which establishes that the molecule does something to pigment but cannot date it in human skin, and mechanism may not justify a week bucket. Missing specifically: a vehicle-controlled human trial with timed assessments in a locatable publication.
No indexed human depigmentation trial located. The 0.25%-versus-4%-hydroquinone study is supplier claim-support material with no journal, DOI or peer review. Published human data: PMID:20961233 - Asawanonda P, Klahan SO. Tetrahydrocurcuminoid cream plus targeted narrowband UVB phototherapy for vitiligo: a preliminary randomized controlled study. Photomed Laser Surg 2010;28(5):679-84 (no significant advantage over UVB alone). Remaining evidence is in vitro and murine.
Plays well with
- sunscreens
- niacinamide
- vitamin c
Tetrahydrocurcumin, answered
Is Tetrahydrocurcumin safe during pregnancy?
Clear it with your doctor first. Tetrahydrocurcumin is flagged as use-with-caution during pregnancy and breastfeeding, so check with your doctor or midwife before adding it.
Who should avoid Tetrahydrocurcumin?
Approach Tetrahydrocurcumin with care if any of these apply to you: very sensitive and compromised barrier.
What concentration of Tetrahydrocurcumin actually works?
Tetrahydrocurcumin tends to be effective at around 0.25%. Much lower and it is likely underdosed.
During pregnancy
Treat Tetrahydrocurcumin as a maybe rather than a yes for now. It is flagged as one to use with caution while pregnant or breastfeeding, so it is worth clearing before you carry on.
When in doubt, check with your doctor or midwife. They outrank any website, including this one.When it is worth booking →
Compare Tetrahydrocurcumin with
- Niacinamide
- Vitamin C (LAA)
- Retinal
- Hydroxypinacolone Retinoate
- Retinyl Retinoate
- Azelaic Acid
- Tranexamic Acid
- Kojic Acid
- Phytic Acid
- Succinic Acid
- THD Ascorbate
- Sodium Ascorbyl Phosphate
- Magnesium Ascorbyl Phosphate
- Ascorbyl Glucoside
- Ethyl Ascorbic Acid
- GHK-Cu
- Bakuchiol
- Alpha Arbutin
- Caffeine
- Zinc PCA
- Tea Tree Oil
- Hydroquinone
- Galactomyces Ferment Filtrate
- Rice Extract
- Thiamidol
- Cysteamine
- N-Acetyl Glucosamine
- Rigin
- Hypochlorous Acid
- Exosomes
- Epidermal Growth Factor
- Carnosine
- 4-n-Butylresorcinol
- 4-Hexylresorcinol
- Zinc Gluconate
Can you mix Tetrahydrocurcumin with
This, for every label you own
One ingredient is easy. A full label is where it gets confusing. The Ingredient Decoder reads any product and tells you the honest truth, ingredient by ingredient.