ALL HAIR AND BEAUTY PRODUCTS ARE FINAL SALE. EXCHANGES AND RETURNS ARE NOT ALLOWED TO KEEP THE INTEGRITY OF THE PRODUCT. THIS IS A PROFESSIONAL PRODUCT. NOT FOR NEW USERS. PRODUCT HAS NEWEST PACKAGING (2022) AND LABELS What It Is Chromatics Oil in Cream Developer is specially formulated to work with the ODS² system to create a rich creamy consistency. Chromatics Oil in Cream Developer is available in: 10 (3%), 20 (6%) and 30 (9%) volume. What It Does No other developer may be substituted for Oil in Cream Developer .To do so would cause unpredictable results. What Else You Need to Know • Chromatics mixes in a 1:1 ratio with 10,20 or 30 vol. Oil in Cream Developers for up to 3 levels of lift and up to 100% coverage of gray hair. Process at room temperature for 35 minutes. The alpha-numeric labeling allows for easy, predictable formulation and results. • The developer bottle features a flip top cap. Prior to opening, the bottle should be stored upright. A stand is provided to store developer upside down while in use for easy dispensing.