Actinidin

Product Description

Actinidin is a highly specialized proteolytic enzyme sourced from kiwifruit (Actinidia deliciosa). As a cysteine protease, it functions similarly to papain but is distinguished in the B2B market by its exceptional gentleness. This makes it a premier strategic ingredient for manufacturers specifically targeting the sensitive skin segment. Its action is precise: it gently hydrolyzes the protein bonds of the stratum corneum, accelerating the shedding of dead cells without the irritation often associated with other exfoliants. For formulators seeking to move beyond common enzymes, Actinidin offers a novel, "superfood-derived" story combined with tangible, mild exfoliating benefits, perfectly aligning with the consumer demand for effective yet non-aggressive skincare solutions.

Product Uses

Actinidin's remarkably mild profile makes it the superior choice for gentle, frequent-use exfoliating formulations. It is ideal for daily-use enzyme cleansers (both powder and gel), mild resurfacing toners, and soothing face masks designed specifically for sensitive or reactive skin types. Its application is perfect for "micro-exfoliation" products that aim for gradual, consistent skin improvement rather than an intense weekly peel. Furthermore, its well-known "superfruit" origin makes it a perfect fit for "Vitamin C" or "antioxidant-rich" branded product lines, where it can be incorporated into brightening serums and clarifying treatments to enhance skin clarity and texture.

Formulation Suggestions

To protect its enzymatic activity, Actinidin must be incorporated during the cool-down phase of formulation, at temperatures below 55°C (131°F). It performs optimally in a slightly acidic environment, with a recommended pH range for the final product between 4.0 and 7.0. Enzymatic activity diminishes significantly in highly alkaline conditions. For the best long-term stability, anhydrous (water-free) powder systems are ideal. In aqueous (water-based) formulas, careful optimization of the preservative and chelation systems is required. Our recommendations are for reference only; please follow the advice of your formulator for actual production.

Product Specification

• INCI Name: Actinidin
• Synonyms: Actinidain, Kiwifruit Protease, Kiwi Enzyme
• CAS No.: 39279-27-1
• Molecular Formula: Complex Polypeptide
• Appearance: White to light yellow powder
• Purity: ≥98%
• Solubility: Soluble in water, insoluble in ethanol.
• Stability: Stable as dry powder. Optimal activity in pH range 4.0-7.0. Avoid heat > 60°C.
• Properties: Proteolytic enzyme, Exfoliating, Keratolytic, Gentle
• Origin: China