: You may find listings on eBay or Amazon from third-party sellers, but purity and storage conditions can be difficult to verify. Regulatory and Safety Considerations
: Hydroquinone powder is highly unstable. It turns brown when exposed to air and light, losing its effectiveness and potentially becoming a skin irritant. Proper storage in airtight, opaque containers is mandatory. Best Practices for Sourcing buy pure hydroquinone powder
Pure hydroquinone (often 99% purity) is typically sold through chemical supply houses and specialized cosmetic ingredient retailers rather than standard beauty stores. : You may find listings on eBay or
: OTC products were previously capped at 2%. Using pure powder makes it very easy to accidentally create a 10% or 20% solution, which can cause severe chemical burns or Ochronosis (a permanent blue-black skin discoloration). buy pure hydroquinone powder