The high concentration of actives in the Brazilian Keratin progressive brush optimizes hair styling. This means straightening happens faster and easier. This requires the presence of heat from the thermal plate, which must be between 180° and 240°.Its technology does not require rinsing after using the board. Does not leave hair yellow and orange. Light formula, which does not require rinsing. Does not contain formaldehyde or derivatives. Compatible with all chemical products. Greater performance: straightens up to 15 medium strands. This item is in the category "Health & Beauty\Hair Care & Styling\Relaxers & Straightening Prod". The seller is "worldgreatseller" and is located in this country: BR. This item can be shipped worldwide.