Senté Defense C Serum
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Senté Defense C Serum is a brightening antioxidant vitamin C serum built for skin that needs both tone correction and genuine healing support. Powered by tetrahexyldecyl ascorbate, a stable oil-soluble form of vitamin C that penetrates more deeply than traditional water-based formulas, alongside Senté's patented Heparan Sulfate Analog (HSA), it brightens dark spots, neutralizes daily environmental damage, and supports the skin's natural repair process in a single lightweight step. It works for all skin types, including those who have found conventional vitamin C serums too harsh or too unstable to trust.
Brightens and Fades Dark Spots: Tetrahexyldecyl ascorbate penetrates deeply to inhibit melanin production at the source, visibly fading sun damage, post-acne marks, and uneven tone over time.
Heals and Repairs Reactive Skin: Heparan Sulfate Analog supports the skin's natural cellular repair cycle, helping to reduce visible redness, calm reactive skin, and restore a healthier, more even-looking complexion alongside the vitamin C.
Daily Antioxidant Defense: Neutralizes free radical damage caused by UV exposure, pollution, and environmental stress, the kind that accumulates over time and accelerates visible aging, with support from tocopheryl acetate (vitamin E) and rosemary leaf extract.
Supports Firmness and Collagen Production: Vitamin C is a key cofactor in collagen synthesis, helping to maintain skin firmness and reduce the appearance of fine lines with consistent daily use.
Stable, Gentle, and Skin-Friendly: Unlike L-ascorbic acid, tetrahexyldecyl ascorbate resists oxidation and does not require a low pH to work, which means no stinging, no irritation, and no racing to use the product before it turns orange in the bottle.
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In a clinical 8 week study:
- 94% of subjects showed improvement in skin brightness
- 87% of subjects showed improvement in skin evenness
- 87% of subjects showed improvement in skin luminosity
*Data on file, Sente
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Senté Defense C Serum is for anyone dealing with dullness, uneven skin tone, sun damage, or dark spots who wants real brightening results without the irritation that traditional vitamin C serums often bring. Because tetrahexyldecyl ascorbate is a stable, oil-soluble form of vitamin C, it suits sensitive, rosacea-prone, and reactive skin types that have struggled with standard ascorbic acid formulas.
Dry skin types especially appreciate this serum for the deeply hydrating, comfortable finish it leaves behind, giving skin a healthy luminosity rather than the tight or stripped feeling that water-based vitamin C formulas can cause.
If you are looking for a vitamin C serum for sensitive skin, a brightening serum for dark spots, or an antioxidant serum you can layer confidently under SPF every morning, this is a formula worth trying.
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Because tetrahexyldecyl ascorbate is stable and non-irritating, you can comfortably layer Senté Defense C Serum with niacinamide, peptides, and even prescription-strength actives in the same routine without the reactivity that traditional L-ascorbic acid formulas sometimes cause.
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Prepare: Apply to clean, dry skin in the morning after cleansing and toning.
Apply: Dispense 3 to 5 drops into your palm or fingertips and gently press the serum into the face, neck, and upper chest.
Technique: Pat gently rather than rubbing to encourage even absorption. Allow 30 to 60 seconds for the serum to absorb before applying the next step.
Frequency: Use every morning as part of your AM routine. Follow with a moisturizer and a broad-spectrum SPF of 30 or higher to maximize antioxidant protection throughout the day.
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Key Ingredients
- Vitamin C (Tetrahexyldecyl Ascorbate): A deeply penetrating, oil-soluble form of Vitamin C that brightens dark spots, evens skin tone, and boosts collagen production without the irritation or instability of traditional Vitamin C.
- Heparan Sulfate Analog (HSA): Senté's breakthrough patented molecule is clinically proven to go beyond surface hydration to deeply replenish moisture, reduce visible redness, and support the skin's natural ability to repair itself at a cellular level, delivering profound and lasting rejuvenation.
- Terminalia Chebula Fruit Extract: A potent antioxidant derived from one of Ayurveda's most revered botanicals, it neutralizes free radical damage, supports collagen integrity, and helps visibly firm and brighten skin with consistent use.
- Acetyl Glucosamine: A skin-identical sugar molecule that inhibits melanin production at the source, visibly fading dark spots and uneven tone while simultaneously supporting skin hydration and barrier repair.
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
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We offer free shipping on every order $50+ (just $7 flat-rate below that). Orders placed before 1pm PST Monday through Friday ship out the same day. Orders placed outside of that window are shipped the very next day!
Changed your mind? We get it. That's why our return window is generous: 30 days even if you've opened and tried it, or a full 60 days if it's still sealed. Some exclusions apply. See our full return policy for details. -
What makes Senté Defense C Serum different from other vitamin C serums?
Senté Defense C Serum uses tetrahexyldecyl ascorbate, a gentle, oil-soluble form of vitamin C that is significantly more stable and better tolerated than L-ascorbic acid. It does not oxidize as quickly, remains potent throughout the life of the product, and is far less likely to cause stinging or irritation. The addition of Senté's patented Heparan Sulfate Analog adds a healing and repair dimension that most vitamin C serums simply do not offer.
What is Heparan Sulfate Analog and why is it in Senté Defense C Serum?
Heparan Sulfate Analog (HSA) is Senté's patented ingredient that mimics the naturally occurring glycosaminoglycan heparan sulfate in skin. HSA supports cellular communication, barrier function, and skin renewal, enhancing how the skin receives and responds to the vitamin C complex for stronger overall brightening and repair results.
Can I use Senté Defense C Serum if I have sensitive skin?
Yes. Senté Defense C Serum is well suited for sensitive and reactive skin types. Tetrahexyldecyl ascorbate is far less irritating than L-ascorbic acid, and the formula does not rely on the harsh low-pH environment that makes traditional vitamin C serums difficult for sensitive skin to tolerate.
When in my routine should I apply Senté Defense C Serum?
Apply Senté Defense C Serum in the morning after cleansing and before moisturizer and SPF. Pairing an antioxidant vitamin C serum with sunscreen creates a synergistic layer of defense against UV and environmental free radical damage that neither product can fully provide alone.
Can I use Senté Defense C Serum with retinol or other actives?
Yes. The tetrahexyldecyl ascorbate in Senté Defense C Serum is compatible with most actives including niacinamide, peptides, and hyaluronic acid in the morning routine. If you use retinol in the evening, applying this serum in the morning provides a complementary antioxidant step that supports skin repair throughout the day.
How long does it take to see results with Senté Defense C Serum?
Most users begin to notice a more luminous, even complexion within 4 to 6 weeks of consistent daily use. Darker spots and areas of sun damage typically show visible improvement between 8 and 12 weeks, depending on the depth of discoloration and how consistently SPF is used alongside the serum.
Is Senté Defense C Serum safe to use after professional treatments?
Senté Defense C Serum is generally well tolerated alongside professional treatments, but always follow post-care guidelines from your provider before reintroducing any active serum after a chemical peel, laser, or microneedling session. Its gentle, non-acidic formula typically allows for earlier reintroduction than traditional vitamin C serums.
Why buy Senté Defense C Serum from Art of Skin Care?
Art of Skin Care is an authorized retailer of Senté, so every product you receive is 100% authentic, sourced directly through official brand channels and never from third-party resellers. Our team is made up of licensed, acne-certified estheticians who hand-select the products we carry based on real skin science and professional results. We don't just sell skincare; we understand it. Not sure if Senté Defense C Serum is right for your skin? Get a free skincare consultation and one of our estheticians will personally guide you.
Senté Defense C Serum is a brightening antioxidant vitamin C serum built for skin that needs both tone correction and genuine healing support. Powered by tetrahexyldecyl ascorbate, a stable oil-soluble form of vitamin C that penetrates more deeply than traditional water-based formulas, alongside Senté's patented Heparan Sulfate Analog (HSA), it brightens dark spots, neutralizes daily environmental damage, and supports the skin's natural repair process in a single lightweight step. It works for all skin types, including those who have found conventional vitamin C serums too harsh or too unstable to trust.
Brightens and Fades Dark Spots: Tetrahexyldecyl ascorbate penetrates deeply to inhibit melanin production at the source, visibly fading sun damage, post-acne marks, and uneven tone over time.
Heals and Repairs Reactive Skin: Heparan Sulfate Analog supports the skin's natural cellular repair cycle, helping to reduce visible redness, calm reactive skin, and restore a healthier, more even-looking complexion alongside the vitamin C.
Daily Antioxidant Defense: Neutralizes free radical damage caused by UV exposure, pollution, and environmental stress, the kind that accumulates over time and accelerates visible aging, with support from tocopheryl acetate (vitamin E) and rosemary leaf extract.
Supports Firmness and Collagen Production: Vitamin C is a key cofactor in collagen synthesis, helping to maintain skin firmness and reduce the appearance of fine lines with consistent daily use.
Stable, Gentle, and Skin-Friendly: Unlike L-ascorbic acid, tetrahexyldecyl ascorbate resists oxidation and does not require a low pH to work, which means no stinging, no irritation, and no racing to use the product before it turns orange in the bottle.
In a clinical 8 week study:
- 94% of subjects showed improvement in skin brightness
- 87% of subjects showed improvement in skin evenness
- 87% of subjects showed improvement in skin luminosity
*Data on file, Sente
Senté Defense C Serum is for anyone dealing with dullness, uneven skin tone, sun damage, or dark spots who wants real brightening results without the irritation that traditional vitamin C serums often bring. Because tetrahexyldecyl ascorbate is a stable, oil-soluble form of vitamin C, it suits sensitive, rosacea-prone, and reactive skin types that have struggled with standard ascorbic acid formulas.
Dry skin types especially appreciate this serum for the deeply hydrating, comfortable finish it leaves behind, giving skin a healthy luminosity rather than the tight or stripped feeling that water-based vitamin C formulas can cause.
If you are looking for a vitamin C serum for sensitive skin, a brightening serum for dark spots, or an antioxidant serum you can layer confidently under SPF every morning, this is a formula worth trying.
Because tetrahexyldecyl ascorbate is stable and non-irritating, you can comfortably layer Senté Defense C Serum with niacinamide, peptides, and even prescription-strength actives in the same routine without the reactivity that traditional L-ascorbic acid formulas sometimes cause.
Prepare: Apply to clean, dry skin in the morning after cleansing and toning.
Apply: Dispense 3 to 5 drops into your palm or fingertips and gently press the serum into the face, neck, and upper chest.
Technique: Pat gently rather than rubbing to encourage even absorption. Allow 30 to 60 seconds for the serum to absorb before applying the next step.
Frequency: Use every morning as part of your AM routine. Follow with a moisturizer and a broad-spectrum SPF of 30 or higher to maximize antioxidant protection throughout the day.
- Vitamin C (Tetrahexyldecyl Ascorbate): A deeply penetrating, oil-soluble form of Vitamin C that brightens dark spots, evens skin tone, and boosts collagen production without the irritation or instability of traditional Vitamin C.
- Heparan Sulfate Analog (HSA): Senté's breakthrough patented molecule is clinically proven to go beyond surface hydration to deeply replenish moisture, reduce visible redness, and support the skin's natural ability to repair itself at a cellular level, delivering profound and lasting rejuvenation.
- Terminalia Chebula Fruit Extract: A potent antioxidant derived from one of Ayurveda's most revered botanicals, it neutralizes free radical damage, supports collagen integrity, and helps visibly firm and brighten skin with consistent use.
- Acetyl Glucosamine: A skin-identical sugar molecule that inhibits melanin production at the source, visibly fading dark spots and uneven tone while simultaneously supporting skin hydration and barrier repair.
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
We offer free shipping on every order $50+ (just $7 flat-rate below that). Orders placed before 1pm PST Monday through Friday ship out the same day. Orders placed outside of that window are shipped the very next day!
Changed your mind? We get it. That's why our return window is generous: 30 days even if you've opened and tried it, or a full 60 days if it's still sealed. Some exclusions apply. See our full return policy for details.
What makes Senté Defense C Serum different from other vitamin C serums?
Senté Defense C Serum uses tetrahexyldecyl ascorbate, a gentle, oil-soluble form of vitamin C that is significantly more stable and better tolerated than L-ascorbic acid. It does not oxidize as quickly, remains potent throughout the life of the product, and is far less likely to cause stinging or irritation. The addition of Senté's patented Heparan Sulfate Analog adds a healing and repair dimension that most vitamin C serums simply do not offer.
What is Heparan Sulfate Analog and why is it in Senté Defense C Serum?
Heparan Sulfate Analog (HSA) is Senté's patented ingredient that mimics the naturally occurring glycosaminoglycan heparan sulfate in skin. HSA supports cellular communication, barrier function, and skin renewal, enhancing how the skin receives and responds to the vitamin C complex for stronger overall brightening and repair results.
Can I use Senté Defense C Serum if I have sensitive skin?
Yes. Senté Defense C Serum is well suited for sensitive and reactive skin types. Tetrahexyldecyl ascorbate is far less irritating than L-ascorbic acid, and the formula does not rely on the harsh low-pH environment that makes traditional vitamin C serums difficult for sensitive skin to tolerate.
When in my routine should I apply Senté Defense C Serum?
Apply Senté Defense C Serum in the morning after cleansing and before moisturizer and SPF. Pairing an antioxidant vitamin C serum with sunscreen creates a synergistic layer of defense against UV and environmental free radical damage that neither product can fully provide alone.
Can I use Senté Defense C Serum with retinol or other actives?
Yes. The tetrahexyldecyl ascorbate in Senté Defense C Serum is compatible with most actives including niacinamide, peptides, and hyaluronic acid in the morning routine. If you use retinol in the evening, applying this serum in the morning provides a complementary antioxidant step that supports skin repair throughout the day.
How long does it take to see results with Senté Defense C Serum?
Most users begin to notice a more luminous, even complexion within 4 to 6 weeks of consistent daily use. Darker spots and areas of sun damage typically show visible improvement between 8 and 12 weeks, depending on the depth of discoloration and how consistently SPF is used alongside the serum.
Is Senté Defense C Serum safe to use after professional treatments?
Senté Defense C Serum is generally well tolerated alongside professional treatments, but always follow post-care guidelines from your provider before reintroducing any active serum after a chemical peel, laser, or microneedling session. Its gentle, non-acidic formula typically allows for earlier reintroduction than traditional vitamin C serums.
Why buy Senté Defense C Serum from Art of Skin Care?
Art of Skin Care is an authorized retailer of Senté, so every product you receive is 100% authentic, sourced directly through official brand channels and never from third-party resellers. Our team is made up of licensed, acne-certified estheticians who hand-select the products we carry based on real skin science and professional results. We don't just sell skincare; we understand it. Not sure if Senté Defense C Serum is right for your skin? Get a free skincare consultation and one of our estheticians will personally guide you.
