Vitamin C in the form that reactive skin can usually tolerate.

Defense C uses 20 percent THD ascorbate, a more stable and better tolerated form of vitamin C, alongside patented Heparan Sulfate Analog and the antioxidant blend Senté calls AOX. The HSA is there to work with the vitamin C rather than beside it, calming and supporting the barrier while the ascorbate works on brightness and tone. Senté reports that 94 percent of subjects showed improvement in skin brightness in as early as eight weeks.

Best for dullness and uneven tone on skin that has not tolerated a conventional vitamin C. Ideal after Hydrate+ and before the moisturizer.

• THD ascorbate at 20 percent, which is the form of vitamin C that reactive skin tends to tolerate
• The patented HSA is formulated to work with the ascorbate rather than beside it, which is the point of the pairing
• Senté reports 94 percent of subjects showing improvement in skin brightness in as early as eight weeks

After cleansing, apply one to two pumps to the face and massage in gently. Use morning and night. Allow the serum to absorb fully, then follow with a moisturizer.

CAUTION: This product does not contain a sunscreen. Use a broad spectrum sunscreen during the day.

KEY INGREDIENTS
Vitamin C, 20 percent THD Ascorbate - A more potent, stable and better tolerated form of vitamin C that helps brighten skin, defend against environmental stressors and support collagen production
Heparan Sulfate Analog - Senté's patented repairing molecule, which works with THD Ascorbate to enhance tolerability, calm inflammation, stimulate collagen production and strengthen the skin barrier
Antioxidant Brightening Blend, AOX - An antioxidant blend that protects against oxidative damage and helps visibly brighten skin

FULL INGREDIENTS
Water/Aqua/Eau, Tetrahexyldecyl Ascorbate, Ethylhexyl Olivate, Dimethicone/Vinyl Dimethicone Crosspolymer, Glycerin, Acetyl Glucosamine, Polyacrylate-13, Dimethicone, Heparan Sulfate, Terminalia Chebula Fruit Extract, Polyisobutene, Oryza Sativa Bran Extract, Polyacrylate Crosspolymer-6, Tocopheryl Acetate, Helianthus Annuus Extract, C12-14 Alketh-12, Polysorbate 20, Sorbitan Isostearate, Tocopherol, Rosmarinus Officinalis Leaf Extract, Chlorphenesin, Phenoxyethanol, Ethylhexylglycerin, Disodium EDTA.

Hypoallergenic and non-comedogenic. Free from parabens, gluten and fragrance.

Senté was founded in 2007 on a molecule the body already makes. Heparan sulfate binds water and governs how skin responds to inflammation, and the supply falls as skin ages. Senté modified it into a topical-stable form, Heparan Sulfate Analog, and holds the patent, which is why it appears in no other line. The result is a range built for skin that is reactive rather than simply aging, and the brand's own clinical work reports visible change in weeks rather than months.