Short Answer
Complete Explanation
Lift is a term used by hair professionals to describe the amount of lightening that occurs on the hair shaft during a bleaching or high‑lift colour process. The degree of lift determines how much darker pigment is removed, which in turn influences the final shade that can be deposited.
- Definition of lift:
Lift is the amount of lightening achieved on the hair shaft, expressed in levels that correspond to how many shades the original colour is raised. - How lift is measured:
Professional colourists use a numeric scale, typically from level 1 (black) to level 10 (very light blonde), to indicate the degree of lightening. - Role of bleaching agents:
Bleach, usually a mixture of ammonium persulfate and hydrogen peroxide, oxidises melanin, breaking down the pigment and creating lift. - Impact of peroxide concentration:
Higher volume peroxide (e.g., 30 vol) provides more oxygen, allowing greater lift but also increasing the risk of damage. - Underlying pigment and lift:
The natural colour of the hair determines how much lift is possible; dark hair contains more melanin and generally requires more processing to reach the same level as light hair.
Common Misconceptions
Lift can be achieved without any damage.
All chemical lift involves oxidation of melanin, which can weaken the hair cuticle; proper after‑care is essential to minimise damage.
Higher peroxide always gives better lift.
Excessive peroxide can over‑process hair, leading to breakage and uneven colour; the appropriate volume depends on the starting level and desired result.
Lift and tone are the same.
Lift changes the darkness of the hair, while toning adjusts the hue of the lifted hair without further lightening.
FAQ
How many levels of lift can be achieved on natural black hair?
Typically, natural black hair can be lifted up to level 5–6 with 30 vol peroxide; higher levels usually require multiple sessions and increase the risk of damage.
Can I lift my hair at home safely?
While over‑the‑counter kits provide lower‑volume peroxide, professional assessment of hair condition and appropriate processing time are recommended to avoid uneven results and excessive damage.
What is the difference between a 20 vol and 30 vol developer?
A 20 vol developer releases about 6% hydrogen peroxide, giving roughly 1–2 levels of lift, whereas a 30 vol developer releases 9% hydrogen peroxide, offering up to 3 levels of lift but also greater oxidative stress on the hair.
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