Biossance Squalane + Vitamin C Rose Oil Versus SkinBetter Science Alto Advanced Defense and Repair Serum

Biossance Squalane + Vitamin C Rose Oil Versus SkinBetter Science Alto Advanced Defense and Repair Serum Detailed comparison of Biossance Squalane + Vitamin C Rose Oil versus SkinBetter Science Alto Advanced Defense and Repair Serum. This brightening oil is formulated around Squalane and Tetrahexyldecyl Ascorbate to brighten dull-looking skin and hydrate skin. This barrier-repair serum is formulated around Niacinamide to strengthen the skin barrier and calm redness. Squalane Tetrahexyldecyl Ascorbate Caprylic/Capric Triglyceride Pistacia Lentiscus Gum Rosa Damascena Flower Extract Geraniol Citronellol Squalane, Tetrahexyldecyl Ascorbate, Caprylic/Capric Triglyceride, Pistacia Lentiscus Gum, Rosa Damascena Flower Extract, Geraniol, Citronellol Water Butylene Glycol Propanediol Ethylhexyl Olivate Cetearyl Alcohol Chlorogenic Acids Niacinamide Lauryl Lactate Dimethyl Isosorbide Pyrroloquinoline Quinone Allyl Ester Hydrolyzed Sodium Hyaluronate Glycyrrhiza Glabra Root Extract Ergothioneine Benzylidene Dimethoxydimethylindanone Arabidopsis Thaliana Extract Carnosine Camellia Sinensis Leaf Extract Vitis Vinifera Seed Extract Theobroma Cacao Seed Extract Curcuma Longa Root Extract Olea Europaea Fruit Extract Euterpe Oleracea Fruit Extract Trifluoroacetyl Tripeptide-2 Buddleja Officinalis Flower Extract Coffea Arabica Leaf Cell Extract Crocus Sativus Leaf Cell Culture Extract Superoxide Dismutase Ubiquinone Plankton Extract Micrococcus Lysate Arginine Zingiber Officinale Root Extract Ceramide NP Ceramide AP Ceramide EOP Linoleic Acid Linolenic Acid Sea Whip Extract Bisabolol Tocopherol Tocopheryl Acetate Cholesterol Phytosphingosine Jojoba Esters Sodium PCA Pentylene Glycol Methyl Gluceth-20 Glycerin Helianthus Annuus Seed Wax Acacia Decurrens Flower Wax Lecithin Sodium Lauroyl Lactylate Dicetyl Phosphate Propanediol Dicaprylate/Caprate Polyglycerin-3 Ceteth-20 Phosphate Diisostearyl Malate Xanthan Gum Steareth-2 Acacia Senegal Gum Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Carbomer Acrylates/C10-30 Alkyl Acrylate Crosspolymer Dextran Ricinoleth-40 Sodium Hydroxide Citric Acid Sodium Phytate Ethylhexylglycerin Phenoxyethanol Water, Butylene Glycol, Propanediol, Ethylhexyl Olivate, Cetearyl Alcohol, Chlorogenic Acids, Niacinamide, Lauryl Lactate, Dimethyl Isosorbide, Pyrroloquinoline Quinone Allyl Ester, Hydrolyzed Sodium Hyaluronate, Glycyrrhiza Glabra Root Extract, Tetrahexyldecyl Ascorbate, Ergothioneine, Benzylidene Dimethoxydimethylindanone, Arabidopsis Thaliana Extract, Carnosine, Camellia Sinensis Leaf Extract, Vitis Vinifera Seed Extract, Theobroma Cacao Seed Extract, Curcuma Longa Root Extract, Olea Europaea Fruit Extract, Euterpe Oleracea Fruit Extract, Trifluoroacetyl Tripeptide-2, Buddleja Officinalis Flower Extract, Coffea Arabica Leaf Cell Extract, Crocus Sativus Leaf Cell Culture Extract, Superoxide Dismutase, Ubiquinone, Plankton Extract, Micrococcus Lysate, Arginine, Zingiber Officinale Root Extract, Ceramide NP, Ceramide AP, Ceramide EOP, Linoleic Acid, Linolenic Acid, Sea Whip Extract, Bisabolol, Tocopherol, Tocopheryl Acetate, Cholesterol, Phytosphingosine, Jojoba Esters, Sodium PCA, Pentylene Glycol, Methyl Gluceth-20, Glycerin, Helianthus Annuus Seed Wax, Acacia Decurrens Flower Wax, Lecithin, Sodium Lauroyl Lactylate, Dicetyl Phosphate, Propanediol Dicaprylate/Caprate, Polyglycerin-3, Ceteth-20 Phosphate, Diisostearyl Malate, Xanthan Gum, Steareth-2, Acacia Senegal Gum, Pentaerythri 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: