This brightening serum is formulated around Tetrahexyldecyl Ascorbate and Simmondsia Chinensis Seed Oil to brighten dull-looking skin and fade the look of dark spots.
This brightening serum is formulated around Tetrahexyldecyl Ascorbate and Glycolic Acid to brighten dull-looking skin and refine skin texture.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningTetrahexyldecyl Ascorbate
Antioxidant
Squalane
Emollient
Polyglyceryl-6 Distearate
Emulsifying
PEG-8 Beeswax
Emulsifying
PPG-12/Smdi Copolymer
EmollientGlycine Soja Sterols
Emollient
Sodium Phytate
ChelatingTocopherol
Antioxidant
Acetamidoethoxyethanol
Humectant
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingSodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingJojoba Esters
Emollient
Glycolic Acid
Buffering
Caprylyl Glycol
Emollient
Cetyl Alcohol
Emollient
Polyglyceryl-3 Beeswax
Emulsifying
Chlorphenesin
Antimicrobial
Glycerin
Humectant
Polysorbate 60
Emulsifying
Sorbitan Isostearate
Emulsifying
Saccharide Isomerate
Humectant
Citrus Aurantium Dulcis Peel Oil
Masking
Citrus Tangerina Peel Oil
Masking
Linalool
Perfuming
Limonene
Perfuming
Phenoxyethanol
Preservative
Water, Tetrahexyldecyl Ascorbate, Squalane, Polyglyceryl-6 Distearate, PEG-8 Beeswax, PPG-12/Smdi Copolymer, Glycine Soja Sterols, Sodium Phytate, Tocopherol, Acetamidoethoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jojoba Esters, Glycolic Acid, Caprylyl Glycol, Cetyl Alcohol, Polyglyceryl-3 Beeswax, Chlorphenesin, Glycerin, Polysorbate 60, Sorbitan Isostearate, Saccharide Isomerate, Citrus Aurantium Dulcis Peel Oil, Citrus Tangerina Peel Oil, Linalool, Limonene, Phenoxyethanol
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Limonene is the compound that gives citrus peel its smell.
In skincare, it shows up as a standalone fragrance ingredient or as a natural compound of citrus and other essential oils.
You'll typically see this ingredient used in very small amounts; anything above 0.001% in a leave-on product or 0.01% in a rinse-off has to be named on the label in the EU. The citrus oils that carry it sit around 0.5-1% in a finished formula.
Fresh limonene is a weak allergen; the real issue is that it slowly reacts with air and then breaks down from oxidation to create hydroperoxides (which are strong sensitizers). This is why suppliers are required to keep the peroxide value below 20 mmol.
Positive reactions in people being investigated for eczema vary:
It's worth skipping if you have a known fragrance allergy or a compromised barrier, but the risk is low for most people.
Older or long-opened products are also more likely to bother you than fresh ones due to oxidation.
Learn more about LimoneneLinalool is a small, naturally occurring scent molecule found in plants like lavender, coriander, bergamot, and more.
It is one of the two most-used fragrance ingredients in cosmetics and added purely for smell. Since it's not used for a skin benefit, there's no "effective dose". Concentration depends on the fragrance load of the product.
The EU requires it to be named on the label above 0.001% in leave-on and 0.01% in rinse-off products.
Fresh linalool is a weak sensitizer but air exposure turns some of it into hydroperoxides, which are strong sensitizers. Those oxidation products are the actual allergy concern.
Patch-test clinics see positive reactions to linalool hydroperoxides in about 4% to 12% of dermatitis patients depending on country and test concentration.
Resassuringly, one analytical study found hydroperoxide levels in real fragranced products to be orders of magnitude below what induced sensitization in animal studies with no evidence of oxidation building up during normal storage.
The practical takeaway is that linalool is fine for most people but worth avoiding if you have a confirmed fragrance contact allergy or a badly compromised barrier.
Products stored a long time after opening are also the high-risk scenario since that is when oxidation happens.
The scent of linalool is described as floral, spicy tropical, and citrus-like.
Learn more about LinaloolWe don't have a description for PPG-12/Smdi Copolymer yet.
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
