Semi-permanent fantasy hair colour. Lime Crime Unicorn Hair Full Coverage Genie is ready to use straight out of the jar, no developers or heat needed! Lime Crime Unicorn Hair full coverage super-saturated pigment delivers intense color impact on pre-bleached platinum to medium blonde hair and adds a tint of colour to dark blonde and light brown hair. DIY-friendly, damage-free formula, smells delicious and works best with pre-bleached platinum to light blonde hair. Amount of Lime Crime Unicorn Hair to use: - Hair Length: Short to Bob - Thin Hair: 1 Jar - Thick Hair 1 Jar - Hair Length: Below Shoulder to Waist Length - Thin Hair: 2 Jars - Thick Hair: 2-3 Jars - Hair Length: Tailbone - Thin Hair: 3+ Jars - Thick Hair 3+ Jars *This does not include extensions. 100% Vegan and Cruelty-Free Warning: Lime Crime Unicorn Hair is ready to use; do not mix with developers, lighteners, or any permanent hair colorant. May temporarily stain skin and permanently stain fabric. Always protect clothing and work space prior to application and wear gloves. Perform a preliminary patch test, as this product contains ingredients which may cause skin irritation on certain individuals. Use a cotton swab to apply a small amount of product to clean/dry skin, such as on the nape of the neck or near the elbow. Allow patch to dry and leave undisturbed for 24 hours. Monitor area for any signs of redness or irritation; if any irritation occurs, discontinue use. This product is not intended for use anywhere on the face or in the immediate eye area. It must not be used to dye eyelashes or eyebrows, to do so may cause harm to the eyes. Keep out of reach of children.