“Direct cationic-HA evidence: cationic hyaluronic acid showed film-forming, clinically measured skin-hydration benefits and perceived hydration in consumer home use.”
HyaCoat™ (Cationic Hyaluronic Acid)
Cosmetics
Code: 1189
Cationic hyaluronic acid powder with improved skin and hair deposition, especially useful for moisturising rinse-off formulas.
HyaCoat™ is cationic hyaluronic acid designed to deposit on negatively charged skin and hair surfaces.
The INCI is Hydroxypropyltrimonium Hyaluronate. The positive charge improves substantivity, making it especially useful in rinse-off products where ordinary hyaluronic acid can be washed away quickly.
It is supplied as a white powder for water-phase addition.
Product Description: In the existing rinse test, standard hyaluronic acid and HyaCoat™ were applied at the same 1% concentration, then rinsed with running water. Standard hyaluronic acid was removed almost completely, while HyaCoat™ remained more substantive on the skin surface after 5, 10 and 15 minutes.
Use this grade when the formula needs a moisturising, conditioning after-feel in facial cleanser, body wash, shampoo, conditioner, soap or other wash-off formats. It can also be used in leave-on water-based formulas where a cationic, skin-conditioning HA is desired.
Usage: Suitable for facial cleanser, body wash, shampoo, conditioner, soap, hand wash, hydrating serum, gel, lotion and cream.
Mixing method:
- Add into the water phase while mixing. Sprinkle powder gradually to avoid clumps.
- For best dispersion, create a water vortex and add slowly under mixing.
- Maintain final formula pH about 3-9. Check compatibility with strongly anionic systems during development.
Usage rate: 0.1-0.5%. Typical rinse-off use: 0.1-0.2%.
Product characteristics: White powder.
Solubility: Water soluble.
Storage: Keep tightly closed in a cool, dry place away from heat and sunlight.
INCI Name: Hydroxypropyltrimonium Hyaluronate
- Cool (15-25C)
- Room (25-40C)
- 24 Months from manufacturing or testing date.
- 0.01% - 0.50%
- 0.10%
- Add into water phase. Avoid temperature above 60C.
- Avoid heat above 60C
- 3.00 - 9.00
- Soluble in Water
- Cream, Lotion, Clear Gel, Toner, Mask, Scrub, Liquid Soap, Shampoo, Conditioner, Cleanser
- -
| Test Name | Specification |
|---|---|
| Apperance | White or almost white powder or granule |
| Identification of CPC | Complies |
| Identification of Sodium | Complies |
| Assay of Glucuronic Acid on dry base | 37.0-46.0% |
| pH (0.5% sq.sol., 25C) | 5.0-7.5 |
| Absorbance (0.5% aq.sol., 25C) | A 280nm 0.25 Max |
| Appearance of Solution (0.5% aq.sol., 25C) | T 550nm 99% Min |
| Loss on drying | 10% Max |
| Residue on Ignition | 15% Max |
| Kinematic Viscosity | 2-10mm2/s |
| Degree of Cationization | 0.15-0.60 |
| Protein | 0.1% Max |
| Heavy Metals (as Pb) | 20ppm Max |
| Bacteria count | 100CFU/g Max |
| Molds & Yeasts | 50CFU/g Max |
| Staphylococcus aureus | Negative/g |
| Pseudomonas aeruginosa | Negative/g |
“Closest ingredient-family evidence: topical hyaluronic-acid serum improved skin hydration and plumpness in a clinical cosmetic study.”
“Closest ingredient-family evidence: a hyaluronic-acid cream improved 24-hour skin hydration and barrier-function parameters after a single application.”
“Closest ingredient-family evidence: low-molecular-weight hyaluronic acid promoted keratinocyte and fibroblast migration/proliferation relevant to epidermal repair and wound-healing support.”
“Ingredient-family review evidence: hyaluronan participates in skin repair biology, hydration, extracellular-matrix organization, and wound-healing processes.”
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