What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningTetrahexyldecyl Ascorbate
Antioxidant
Squalane
Emollient
Glycerin
Humectant
Propanediol
Solvent
Caprylic/Capric Triglyceride
Masking
Cetearyl Alcohol
Emollient
Sodium Hyaluronate
Humectant
Trifluoroacetyl Tripeptide-2
Skin Conditioning
Astaxanthin
Skin Conditioning
Bisabolol
Masking
Glutathione
Ergothioneine
Antioxidant
Cetearyl Olivate
Sorbitan Olivate
Emulsifying
Ceteareth-20
Cleansing
Dextran
Ferulic Acid
Antimicrobial
Fulvic Acid
Skin ConditioningPlankton Extract
Skin ConditioningChlorella Vulgaris Extract
Skin Conditioning
Zingiber Officinale Root Extract
Masking
Camellia Sinensis Leaf Extract
Antimicrobial
Vitis Vinifera Seed Extract
Antimicrobial
Curcuma Longa Root Extract
Masking
Glycyrrhiza Glabra Root Extract
Bleaching
Arctostaphylos Uva Ursi Leaf Extract
Skin Conditioning
Tocopherol
Antioxidant
Magnesium Ascorbyl Phosphate
Antioxidant
Lecithin
Emollient
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingCarbomer
Emulsion StabilisingPhenoxyethanol
Preservative
Ethylhexylglycerin
Skin ConditioningSodium Hydroxide
BufferingWater, Tetrahexyldecyl Ascorbate, Squalane, Glycerin, Propanediol, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Sodium Hyaluronate, Trifluoroacetyl Tripeptide-2, Astaxanthin, Bisabolol, Glutathione, Ergothioneine, Cetearyl Olivate, Sorbitan Olivate, Ceteareth-20, Dextran, Ferulic Acid, Fulvic Acid, Plankton Extract, Chlorella Vulgaris Extract, Zingiber Officinale Root Extract, Camellia Sinensis Leaf Extract, Vitis Vinifera Seed Extract, Curcuma Longa Root Extract, Glycyrrhiza Glabra Root Extract, Arctostaphylos Uva Ursi Leaf Extract, Tocopherol, Magnesium Ascorbyl Phosphate, Lecithin, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Phenoxyethanol, Ethylhexylglycerin, Sodium Hydroxide
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Tetrahexyldecyl Ascorbate (THD) is a stable and oil-soluble form of Vitamin C.
THD is special in that it has the ability to travel deeper into skin than traditional ascorbic acid while maintaining the same skin benefits (double win!).
Because it’s oil-soluble, THD dives deep into your skin’s fatty layers (think ceramides and cholesterol) to fight off the kind of free radicals that mess with your skin barrier. This makes it a great pair with water-based vitamin C (ascorbic acid) that mainly works on the surface.
Even at just 0.1%, THD is already showing great antioxidant activity. When used up to 2%, it helps keep your skin happy and calm, especially when it’s stressed from pollution or sun.
Want to fade dark spots or tackle hyperpigmentation? You’ll want 5% or more. Pairing it with brightening buddies like niacinamide or licorice root gives even better results. One study even used 30% THD with other brighteners and saw real results on stubborn discoloration, even in melasma-prone skin.
A note on THD: It’s has a slightly silky, oily texture and usually shows up colorless or pale yellow (though the exact shade can vary by supplier).
While you can sneak it into water-based formulas, it really shines when paired with silicones or oils, which help your skin soak it up better.
THD is pretty stable, but it’s still vulnerable to degradation like ascorbic acid. Too much light or heat (above 113°F / 45°C) can break it down over time. Go for dark and opaque packaging that keeps it safe and shady!
Read more about other types of Vitamin C:
Learn more about Tetrahexyldecyl Ascorbate
