20% Vitamin C Rapid Radiance Serum with STAY-C 50™

Name: 20% Vitamin C Rapid Radiance Serum with STAY-C 50™
Brand: Swell Skin
SKU: VIT C
Price: 59.0 USD
Availability: InStock

20% Vitamin C Rapid Radiance Serum with STAY-C 50™

$59.00 USD

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Product variants

Quantity

✓ 20% Professional-Strength Vitamin C
✓ STAY-C 50™ — Stabilized for Maximum Potency
✓ Reverses Sun Damage & Fades Dark Spots
✓ Boosts Collagen for Firmer, Smoother Skin
✓ Visible Results in 2–4 Weeks
✓ No Laser Treatments Needed

Professional-Strength Vitamin C for Radiant, Repaired Skin

Transform damaged, dull skin with our 20% Vitamin C Rapid Radiance & Repair Serum featuring advanced STAY-C 50™ technology. This potent, stabilized formula delivers professional-level results for sun damage, hyperpigmentation, fine lines, and uneven texture — no laser treatments needed. Experience visibly brighter, smoother, more youthful looking skin. A SUPER DOSE OF VITAMIN C IN A SUPER 2OZ SIZE.

Radiance & Repair Benefits

Reverses Sun Damage & Skin Damage: High-potency 20% Vitamin C penetrates deeply to help repair cellular damage from UV exposure, environmental stressors, and aging, restoring skin's healthy appearance
Boosts Collagen Production: Stimulates natural collagen synthesis to firm skin, reduce fine lines and wrinkles, and improve overall skin structure and elasticity
Brightens & Illuminates: Rapidly improves skin radiance and luminosity, transforming dull, tired-looking skin into a glowing, healthy complexion
Advanced STAY-C 50™ Technology: Stabilized Vitamin C formula ensures maximum potency and effectiveness without oxidation, delivering consistent results that inferior Vitamin C serums can't match
Protects Against Future Damage: Powerful antioxidant protection neutralizes free radicals and shields skin from environmental aging, pollution, and UV damage
Fades Dark Spots & Hyperpigmentation: Powerful antioxidants help to inhibit melanin production and fade existing discoloration, including age spots, sun spots, and post-acne marks for a more even complexion

Why STAY-C 50™ Makes the Difference

Most Vitamin C serums oxidize quickly, losing their effectiveness and turning brown within weeks. Our advanced STAY-C 50™ technology keeps Vitamin C stable and potent, ensuring you get professional-strength results with every application. This pharmaceutical-grade formulation delivers 20% pure Vitamin C that actually works — no wasted product, no disappointing results.

The Natural Alternative to Laser Treatments

Achieve the dramatic skin repair and radiance you want without expensive, painful laser treatments or chemical peels. Our 20% Vitamin C serum delivers professional-level correction for sun damage, age spots, and skin texture issues from the comfort of home, with visible improvements in as little as 2–4 weeks.

Frequently Asked Questions

What is STAY-C 50™ and why does it matter?

STAY-C 50™ is a pharmaceutical-grade, stabilized form of Vitamin C (sodium ascorbyl phosphate) developed by DSM. The biggest problem with most Vitamin C serums is oxidation — once exposed to air and light, standard L-ascorbic acid degrades rapidly, turning the serum brown and losing its effectiveness. STAY-C 50™ is engineered to remain stable and potent throughout the life of the product, so every drop delivers the same professional-strength results as the first.

Will 20% Vitamin C irritate my skin?

High-concentration Vitamin C can cause tingling or sensitivity with some formulations, but STAY-C 50™ (sodium ascorbyl phosphate) is significantly gentler than L-ascorbic acid at the same concentration. If you have sensitive skin, we recommend starting with every other day and gradually increasing to daily use. The chamomile and aloe in our formula also help calm and buffer any potential sensitivity.

When should I apply this — morning or night?

Morning is ideal. Vitamin C is an antioxidant, which means it works best when applied before sun exposure to neutralize free radicals throughout the day. Apply 3–4 drops to clean skin, let it absorb, then follow with moisturizer and SPF 30+. The SPF is essential — it protects your skin while the Vitamin C works to repair existing damage underneath.

How long until I see results?

Most customers notice improved brightness and a more even skin tone within 2–3 weeks. Visible fading of dark spots, sun damage, and hyperpigmentation typically appears at 4–6 weeks of consistent daily use. Collagen-related improvements — firmer skin, reduced fine lines — develop over 6–8 weeks. Consistency is key for cumulative results.

How to Use

Apply 3-4 drops to clean, dry skin every morning before moisturizer and SPF. Gently massage into face, neck, and décolletage, focusing on areas with sun damage or hyperpigmentation. Always follow with broad-spectrum SPF 30+ during the day to protect skin and maximize results. For sensitive skin, start with every other day and gradually increase frequency.

Suitable for most skin types. Particularly effective for sun-damaged, aging, dull, or hyperpigmented skin seeking professional-level repair and radiance.

Key Ingredients:

Stay-C®* (sodium ascorbyl phosphate, stabilized Vitamin C), Hyaluronic Acid, Retinol *=trademark of DSM

Ingredients:

Aqua, aloe barbadensis (vera) leaf juice*, sodium ascorbyl phosphate (Vitamin C), sodium hyaluronate, retinyl palmitate, PEG-40 hydrogenated castor oil, butyrospermum parkii (shea butter), matricaria recutita (chamomile) flower extract*, camellia sinensis (green tea) leaf extract, olea europaea (olive) leaf extract*, carbomer, arginine, citrus aurantium dulcis (orange) oil, phenoxyethanol, ethylhexylglycerin. *certified organic