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Direct AntioxidantsRecommended: AM/PM Slot
Tetrahexyldecyl Ascorbate (THD)
Clinical Overview
An oil-soluble tetra-ester of ascorbic acid that integrates seamlessly into skin lipid lamellae for deep dermal penetration.
Epidermal & Cutaneous Mechanism
Lipophilic ester structure enables up to 50x deeper transcutaneous penetration than pure ascorbic acid, converting enzymatically to free Vitamin C inside fibroblasts.
Addresses Skin Concerns
Dry skin pigmentationLoss of dermal firmnessLipid peroxidation
Recognized INCI Names on Packaging Labels
Tetrahexyldecyl AscorbateAscorbyl Tetraisopalmitate
Compatible Synergies
- ✓Retinoids (compatible in oil phase)
- ✓Ceramides
- ✓Squalane
Separate or Alternate
- No significant contraindications documented.