Peroxide strength

[philipxxx]

I just wanted to know once you've opened a bottle of 12% how long will it stay 12% with the lid on tightly

 

[AcidPerm]

Good question! I'm not sure there's a definitive answer because each time you open it for use, you will be exposing oxygen to it and as it empties, because it's not in a vacuum, it will suck in air (oxygen).

I'm always wary with 12% as being mobile, I only use it for highlifts so I don't get through it that quickly.

 

[philipxxx]

Yer I only use it for high lifts luckily Wella do a 500ml bottle which I normally get , if I could get 120ml bottles that would be even better because I would just buy a new one whenever I need to

 

[adamlea87]

For LOreal it is 18 months, some brands say 24 months - hope this helps.

Check for this on the bottle:

 

[philipxxx]

I bought a Schwarzkopf blondme 12% today but I was wondering if it will still be 12% because it's the old packaging

 

[tsparker78]

If its remained sealed, it should be fine.

 

[AcidPerm]

Wow, is that 2 years from purchase or after opening?