Polyvinyl Alcohol (PVA) Powder: Uses and Safety

Polyvinyl alcohol, usually shortened to PVA or PVOH, is a synthetic polymer that dissolves in water. It's made by hydrolysing polyvinyl acetate, so don't confuse it with the white PVA (polyvinyl acetate) wood glue sold in tubes.

• Formula: [CH2CH(OH)]n
• CAS number: 9002-89-5
• Appearance: white to cream powder or granules, odourless
• Melting: softens and melts around 200 °C, and breaks down with stronger heating
• Solubility: dissolves in water; how easily depends on the grade

When a PVA solution dries, it leaves a clear, flexible film. That property explains most of its uses, from peel-off masks to laundry pod films.

Azlok lists Polyvinyl Alcohol Cold Powder in its cosmetic raw ingredients range. "Cold" usually means a grade that dissolves in cold or lukewarm water more easily than standard PVA, which needs hot water. Confirm the dissolving temperature on the product page or specification. The product name doesn't give a pack size.

For the current rate, see today's price per kg.

• Cosmetics: peel-off face masks, where it forms the film you peel away, and as a film former and thickener in some gels.
• Slime and school science: PVA solution cross-linked with borax solution makes a classic stretchy slime used to teach polymers.
• Adhesives: paper glues and as a stabiliser in polyvinyl acetate wood glues.
• Textiles and paper: warp sizing to strengthen yarn during weaving, and paper coating.
• Films and packaging: water-soluble films for detergent pods and laundry bags.
• Construction: an additive in some cement and putty mixes.

PVA lumps easily, so the way you add it to water matters.

1. Sprinkle into water while stirring: add the powder slowly to cold or room-temperature water with steady stirring. Dumping it in forms sticky lumps.
2. Heat if needed: if it doesn't clear, warm the mix gently, typically to about 80–90 °C for standard grades, stirring until clear. A cold-soluble grade may need less heat. Cover the pot so water doesn't evaporate.
3. Let it rest: leave the solution to cool and settle so bubbles rise out.
4. Slime (school recipe): a common class demo mixes a 4% PVA solution with a 4% borax solution, roughly 10 parts PVA to 1 part borax by volume, stirring until it gels. Adults should prepare the borax solution, and children should wash hands afterwards.
5. Peel-off masks: PVA is commonly used at around 10–15% in such masks. Add any preservative needed, patch test, and keep it away from eyes and eyebrows.

• PVA is low hazard, but the fine dust can irritate the eyes and lungs. Wear a dust mask and glasses when pouring.
• The dust is combustible. Keep big dust clouds away from flames and sparks.
• Hot solutions can scald. Handle the pot with care and let it cool before use.
• Store the powder airtight in a cool, dry place. It absorbs moisture and cakes.
• Water-based PVA solutions can grow mould, so make them fresh or add a suitable preservative.
• Keep it away from children, and supervise any slime activity.
• Don't pour thick solutions down the drain. Let them dry into a film and throw it out with solid waste.

• Schools and slime makers: a small pack makes several litres of 4% solution.
• Cosmetic makers: ask for the grade details (hydrolysis level and viscosity), since they change how firm the mask film is.
• Textile, paper and adhesive units: for 25 kg or more, send a bulk inquiry.

If you sell finished cosmetics in India, keep supplier documents ready, as products must meet BIS and CDSCO rules.