How long does it last after the process?
322148
If done correctly and you use the proper products to maintain the health of your hair the process lasts forever. Your new growth will reveal the before and after and you will see a big difference.
1148344
For me the effects last 4 to 6 hours depending on activity factors. Unless you over-apply there shouldn't be any visible residue to flake off.
2068210
About 4-6 months. You do have to keep using it. If you slack off for several weeks, things will go back to the way they were before. (As I've discovered.) It's definitely a time commitment, but depending on how much you want to maintain a certain appearance, it may or may not be worth it to you.
733092
Maybe an hour or two, I guess, at least. Maybe less if you apply it more lightly. Certainly by the next day even with a heavy application.
1257389
I use it only once/day. But I haven't finished mine yet so don't know quite how long it lasts. But enjoy it & see what happens. Hope it works for you. I like it!!
937763
I haven't had any problems with it after 30 days. Most of the time though I use it up before then.
1560516
Never timed it tho if I had to guess...about 3 hours depending upon how much you use.
2053931
it depends on the frequency you use it ,normally it will last about 3 days.thanks
502436
You'll get better results if you leave it in for 4 to 5 hours. It's a long time but definitely worth it
1967926
I do NOT immediately, you should see improvement over time. As to your other question, I keep the solution in my mouth from 5 to 15 minutes other reviewers have claimed longer 30 minutes. I hope this but it really comes down to you and what you prefer!
804122
Have no idea but I used mine in about 90 days. The last one was as good as the first! (Educated guess is about 6 months plus!)
1857592
Mine took about 24 hours although the recommended time is 48 hours I believe and you should probably follown that.
625197
Not very long unless you use Bloxygen which Amazon sells. Maybe a month without it.
1401991
Depends on the temperature, humidity and the thickness of application. I would say 5-7 min on average.
1452140
Depends on how long you want it to last. I generally go through a bottle in 10 days or so and like it better after it has been sitting out a while.
873393
It should stay on for 2 weeks or longer. You can apply over it for corrections.
1413243
From the applications I have made, it does have a lasting effect. However, it doesn't last forever. I spray about 6 week intervals.