How Quasi-Colors Work:
* Deposit Only (mostly): Quasi-colors primarily deposit color onto the outer layer of the hair shaft (the cuticle). They contain little or no ammonia or peroxide, meaning they don't significantly lift the natural hair pigment. Some quasi-colors may contain a very low volume of peroxide to allow a small amount of lift.
* Larger Color Molecules: The color molecules in quasi-colors are larger than those in permanent dyes. This size makes it harder for them to penetrate deeply into the hair cortex.
Effects on Hair Structure:
* Minimal Damage: Since quasi-colors don't drastically alter the hair's natural structure, they are generally considered less damaging than permanent dyes.
* Cuticle Layer: They can slightly open the cuticle layer to allow the color to deposit, but the impact is much less than with permanent dyes. This can result in temporary dryness.
* No Significant Cortex Alteration: Quasi-colors mostly avoid altering the hair cortex, where hair strength and elasticity are determined.
* Adds Shine: Quasi-colors coat the hair shaft, which can smooth the cuticle and create a temporary shine.
* Fades Over Time: As the hair is washed, the color molecules gradually wash away from the outer cuticle layer, causing the color to fade. This is why quasi-colors are not permanent.
Summary Table:
| Effect | Impact of Quasi-Color |
| ------------------ | --------------------- |
| Damage | Minimal |
| Cuticle Alteration | Slight opening |
| Cortex Alteration | Negligible |
| Shine | Increased |
| Permanence | Temporary (fades) |
Important Considerations:
* Hair Porosity: Highly porous hair may absorb quasi-colors more readily, and the color may fade faster.
* Pre-Existing Damage: If the hair is already damaged, even quasi-colors can contribute to further dryness or breakage, although to a lesser extent than permanent colors.
* Grey Coverage: Quasi-colors are best for blending or toning grey hairs, rather than completely covering them.
In essence, quasi-colors are a gentler option for adding or enhancing color, providing shine, and minimizing damage to the hair structure. They are a good choice for people who want a temporary color change or to maintain their current hair color.