“Closest direct evidence: topical 15% zinc sulfate solution (hydrate form not specified) produced 70% complete foot-odor clearance after 2 weeks versus 2% with placebo, supporting odor-control use.”
Zinc Sulfate (Monohydrate)
Cosmetics
Code: 253052
Water‑soluble zinc salt for deodorant/odor control and pigmentation care (monohydrate).
Zinc Sulfate (Monohydrate) is a cosmetic-grade zinc salt used in odor-control (deodorant) products and targeted pigmentation care.
Published studies report strong deodorizing efficacy from zinc sulfate solutions (e.g., 15% topical solution reduced foot odor >70%) and improvement in melasma at 10% usage. In cosmetics, typical leave-on levels are much lower; always conform to local cosmetic regulations.
Compared with the heptahydrate form, the monohydrate form provides higher ZnSO4 content per gram, yet remains readily soluble in water and easy to formulate.
Usage: Deodorant/odor-control products (roll-on, spray, stick), clarifying toners/serums, targeted pigmentation care.
How to mix:
- Dissolve directly in the water phase until clear (heat tolerant).
- Work within pH ~3.5–7 to avoid precipitation; adjust pH after dissolution.
- For thickened systems, neutralize gelling agents first, then add the solution.
Usage rate: 0.1–15% (Thai FDA permits up to 1% for cosmetics; higher levels are drug territory.)
Product Description: White crystalline powder.
Solubility: Freely soluble in water; insoluble in oils.
Storage: Tightly closed, dry place; avoid moisture and heat. For long‑term storage keep refrigerated. Shelf life ≥ 24 months.
INCI Name: Zinc Sulfate
- White crystalline powder
- Room (25-40C)
- 24 Months from manufacturing or testing date.
- 0.10% - 15.00%
- 5.00%
- Add into water phase. Heat tolerant.
- Heat Tolerant
- 3.50 - 7.00
- Soluble in Water
- -
| Test Name | Specification |
|---|---|
| Assay (ZnSO4·H2O), w/% | 99.0–100.5 |
| Acidity | Pass test |
| Alkali and alkaline earth metal salts, w/% | ≤ 0.50 |
| Cadmium (Cd), mg/kg | ≤ 2 |
| Lead (Pb), mg/kg | ≤ 4 |
| Mercury (Hg), mg/kg | ≤ 1 |
| Selenium (Se), mg/kg | ≤ 30 |
| Arsenic (As), mg/kg | ≤ 3 |
“Closest direct pigmentation evidence: topical 10% zinc sulfate solution reduced melasma MASI by about 49.8% over 2 months; hydrate form not specified and level is above typical cosmetic limits.”
“Controlled melasma evidence: 10% zinc sulfate solution reduced MASI but was less effective than 4% hydroquinone, supporting limited or adjunct pigmentation-care relevance.”
“Closest topical zinc sulfate dermatology evidence outside cosmetics: 10% zinc sulfate solution showed high clearance of plane warts in a double-blind trial, reflecting topical antiviral/astringent skin activity.”
search
hourglass_emptyLoading product examples...
Cart
No products
Subtotal:
0.00
Total
0.00
THB
Loading Researcher Network details...