Satin’s 40 Volume is a gel developer in the market! Use this unique formula when coloring up to 4 levels lighter. 40 Volume enhances your hair’s softness while adding longevity and life to any hair color. Mix it with Satin Color for a rich leave-in application. Your hair will retain its color longer thanks to its gel formula!
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Features:

• Gel Developer
• For Coloring 4 Levels Lighter
• Mixes with Satin Color
• Retains Color and Adds Softness
• Shines Hair
• 1 Part to 2 Part Ratio 1:2 - 1 oz of color to 2 oz of developer

Directions:
Mix 1 oz. of Satin Hair Color with 2 oz. of Satin 40 Volume Developer in a small, non-metallic bowl. Apply to darkest regions of hair first. Then, apply to rest of hair while leaving approximately 3/4 inches of the roots untouched. Leave on approximately 20 minutes depending on shade desired. Afterward, apply the mixture to roots for an additional 20-25 minutes. Rinse thoroughly with lukewarm water. Then, shampoo to remove all chemicals from the hair.

Caution:
For professional use only. Ensure that you are not allergic to this product by performing a patch test 24 hours before use. Apply a small amount to skin and wash off with soap and water. If no irritation occurs, this product is safe to use.