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Sodium Ascorbyl Phosphate Water Soluble Vitamin C Sodium Salt
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Sodium Ascorbyl Phosphate,is a stable derivative of Vitamin C that is widely used in skin care products. It is a water-soluble ingredient known for its antioxidant properties and ability to brighten skin tone. Sodium Ascorbyl Phosphate is commonly used in anti-aging products because of its ability to stimulate collagen production and reduce the appearance of fine lines and wrinkles.

  • Product Name: Sodium Ascorbyl Phosphate
  • INCI Name: Sodium Ascorbyl Phosphate
  • Product Code: YNR®SAP
  • CAS No.: 66170-10-3
  • Formula: C6H6O9Na3
  • Functions: Antioxidant, Anti-Aging

product detail

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product detail

Sodium Ascorbyl Phosphate (SAP) is a water-soluble, stabilized form of vitamin C (ascorbic acid) engineered to overcome the biggest limitations of traditional vitamin C: oxidation, photodegradation, and skin irritation. Unlike pure ascorbic acid— which breaks down quickly when exposed to light, heat, or air, and often triggers stinging in sensitive skin—SAP features a phosphate group that shields its active structure, ensuring long-lasting potency in skincare products (from serums and moisturizers to toners and spot treatments). With a neutral pH (around 7), it’s compatible with all skin types, including acne-prone, rosacea-prone, and delicate skin. Clinically tested for safety and efficacy, SAP is non-comedogenic, non-irritating, and proven to retain its activity even in challenging formulation conditions, making it a reliable ingredient for daily use.

Sodium Ascorbyl Phosphate (SAP) is a water-soluble, stabilized form of vitamin C (ascorbic acid) engineered to overcome the biggest limitations of traditional vitamin C: oxidation, photodegradation, and skin irritation. Unlike pure ascorbic acid— which breaks down quickly when exposed to light, heat, or air, and often triggers stinging in sensitive skin—SAP features a phosphate group that shields its active structure, ensuring long-lasting potency in skincare products (from serums and moisturizers to toners and spot treatments). With a neutral pH (around 7), it’s compatible with all skin types, including acne-prone, rosacea-prone, and delicate skin. Clinically tested for safety and efficacy, SAP is non-comedogenic, non-irritating, and proven to retain its activity even in challenging formulation conditions, making it a reliable ingredient for daily use.
Key Benefits
  1. Long-Lasting Antioxidant Protection: SAP neutralizes harmful free radicals (from UV rays, pollution, and blue light) that cause premature aging, such as fine lines, dullness, and loss of elasticity. Studies show it reduces reactive oxygen species (ROS) production by up to 40% after 24 hours of use, offering sustained defense against environmental damage.
  1. Brightens Skin & Fades Hyperpigmentation: By inhibiting tyrosinase—the enzyme that drives melanin production—SAP targets dark spots, sun damage, and post-inflammatory hyperpigmentation (PIH) without disrupting healthy skin tone. Regular use fades existing discoloration by 25–30% over 8 weeks and prevents new spots from forming, leaving skin with a luminous, even glow.
  1. Soothes Acne & Reduces Breakouts: SAP exhibits antibacterial properties that target Cutibacterium acnes (the bacteria linked to acne) while calming inflammation. It also regulates sebum production and promotes the healing of acne lesions, reducing the risk of scarring. Clinical data shows a 32% reduction in acne lesions after 4 weeks of consistent use.
  1. Strengthens the Skin Barrier: By stimulating collagen synthesis and boosting ceramide production, SAP enhances the skin’s protective barrier, reducing transepidermal water loss (TEWL). This improves hydration retention, minimizes redness from sensitivity, and softens the appearance of fine lines caused by dryness or barrier damage.
  1. Gentle for Sensitive Skin: Unlike acidic vitamin C derivatives, SAP’s neutral pH eliminates stinging, tingling, or redness—common complaints with traditional vitamin C. It’s safe for use during pregnancy, post-sun exposure, or alongside other active ingredients (e.g., niacinamide, retinol) without increasing irritation.
 
How It Works
SAP’s effectiveness lies in its unique structure and targeted mechanism of action, which ensures stability, penetration, and active delivery to skin cells:
First, stability protection: The phosphate group attached to the ascorbic acid molecule acts as a “shield,” preventing oxidation and degradation when exposed to light, heat, or air. This means SAP remains active in skincare products from formulation to application, unlike pure vitamin C, which often loses potency before use.
Second, skin penetration & activation: Once applied, SAP is gently absorbed into the epidermis. Here, skin enzymes called phosphatases break down the phosphate group, converting SAP into free, active ascorbic acid—the form of vitamin C that skin cells use to drive key benefits. This slow, controlled conversion ensures sustained activity without overwhelming the skin.

Applications

● Skin Whitening

● Antioxidant

● Sun care Products

Advantages

● More stable and less prone to oxidation

● Effectively treat acne

● Ultraviolet-proof