Green Flash, the first at-home semi-permanent that removes like a nail polish, formulated with bio-sourced ingredients and lasting up to 10 days! Green Flash is the first at-home semi-permanent that can be removed like a varnish. 84% bio-sourced, it provides 10 days of hold and shine. It dries directly, guarantees a natural manicure and can be removed with a gentle solvent. Formulated without toxic ingredients, it does not damage your nails and respects your health. The Green Flash protocol requires a base coat, a colour, a top coat from the Green Flash range and a LED lamp with a minimum power of 18W.