No, pH Plex 1 does not accelerate the bleaching process – but it does not slow it down either. The product is formulated to have neither a positive nor a negative effect on the lifting performance of your bleach, functioning exclusively as a protective bond-building component.
Why pH Plex 1 Doesn’t Alter the Bleaching Reaction
pH Plex 1 Protect is a bond builder pH-matched to the bleaching environment, with a working pH of around 9.0 – exactly the alkaline range in which bleaches and oxidative colors operate. Because of this alignment, adding it does not interfere with the chemistry of lifting: hydrogen peroxide continues to break down melanin pigments in the alkaline environment at the usual pace, and persulfates deliver their accelerating effect undisturbed.
What the Manufacturer Explicitly States
The official application instructions make it clear that neither the development time nor the temperature should be changed when pH Plex 1 is mixed into the bleach. The logical consequence is:
- No shortening of development time → no acceleration
- No extension of development time → no slowdown
- The bleach behaves identically to an application without the additive – just with integrated protection
What pH Plex 1 Actually Does
Instead of manipulating the bleaching reaction, pH Plex 1 works in parallel to the lifting process by acting on the hair structure itself, bonding via its Malic Acid Complex to all 21 amino acids in keratin – not only to cysteine as conventional bond builders do. This stabilizes the protein structures weakened by the bleach without creating any chemical “competition” between lifting and protection.
A Common Misconception: “Plex Products Slow Down Bleach”
A widespread myth holds that bond builders weaken the bleaching action. This does not apply to pH Plex 1, because the product operates in the same alkaline pH zone as the bleach itself and therefore does not buffer against the lifting environment. Only pH Plex 2 (pH ~5.0) brings the hair back into the acidic range after rinsing – in other words, outside the bleaching process.
Practical Fact Check for Users
| Criterion | Effect of pH Plex 1 |
|---|---|
| Bleach development time | unchanged |
| Lift levels achieved | unchanged |
| Temperature during processing | unchanged |
| Hair protection during bleaching | significantly improved |
| Acceleration of lifting | no |
| Slowdown of lifting | no |
Bottom Line for Stylists and Home Users
Anyone mixing pH Plex 1 into a bleach formula gets exactly the same lifting result in the same amount of time – only with significantly less structural damage to the hair. The product is therefore a protection add-on, neither a bleach accelerator nor a bleach inhibitor – a key difference compared to some competing systems that require recipe adjustments.