I opened My bottle 2 years ago then put it aside . Does the strength deminish ? It seems to sting less ?
1500870
I kept my bottle of this for a little over two years without seeing a decrease in efficacy. Of course it's not recommended to keep it that long, because the pH can change drastically in either direction over time, and the strength of the peel is unpredictable. The reason it may not have stung is that the peel has weakened, you weren't as exfoliated as in the past, or your skin has become "used to" the ingredient. If you haven't been using something like AHA, BHA, Vitamin C, RetinA, or another chemical exfoliant, it's very possible that the Lactic Acid just hasn't had a chance to get as "deep" as it had in the past, so more applications at shorter intervals may be required to feel it again, and then return to a more regular/spaced out regimen. Remember too, that this company doesn't explain how or if it buffers its lactic acid to maintain proper pH over time, so there's not a way to know if it has strengthened or weakened or remained stable without doing a pH test. Furthermore, there is no expiration date, so use at your own risk. The best thing would probably be to throw it away and get a new one. You could always do a patch test on thin skin (inside of elbow or behind the ear) apply and let sit for full time you would have it on your face, neutralize, and cover the area. If it's good to go after 48 hours, you are too.
8813
I've been using the same bottle for about 4 years after opened. Its fermented, it does not go bad. It was created by being aged. I just keep it on the shelf in my cabinet.
1087914
I'm not an expert. I used the degree of my pain and the strength of the aroma, compaired to a commercial tube I had purchased. If it didn't smell as strong as the commercial product, I added a few more drops.
1201269
Can't say for sure since this strength started to cause irritation to my gums so I stopped using it.
259187
We've kept it for 2 years then pulled it out again for a different project, stirred it up and it's been fine. Just seal the lid well.
1178779
It's going to depend on the bottle you get. Mine does not expire for more than 2 years from now.
1976962
I just checked my bottle of 800 which I opened two moths ago. There is a smell, but it's not that strong. Are you sensitive to some odours? Maybe you should contact the provider.
476689
I purchased mine in June 2013 but did not take the cap off except for the initial smell until August, I think. Since that time I have been using it intermittently for migraines (very successfully). It now seems to be weaker in smell. I came here to order another so I won't be without if a migraine strikes again.
2005642
It appears to be good for about two years. Using it every day it usually lasts me a year and as far as I can see it doesn't lose its potency. I love it.
2074117
I really don't know but I rather doubt that's a concern with this type of product. I've just finished a bottle that lasted me about two months. It's an incredible product and worth a try!
1144502
I have been using same bottles for a couple of years-see no difference in bonding power.
1531360
I didn't heck that on my bottle before I stored it away in the cabinet. I would use it up to at least one year and maybe even two years. I would just make sure the top of the bottle is clean before you sealed it.
956157
It's been a couple months and I'm still on my first bottle. You want to use very little at a time
1703541
I found a bottle I misplaced that was almost two years old. The quality was just the same for me - no issues at all. I just finished it off
899037
My husband, who uses the stuff, says he's never noticed any deterioration (he usually starts the last bottle in the bulk package about 3 months after we bought it). We do, however, store the unused bottles in their original boxes and in a dark closet, which could help protect them.
673343
I have actually dropped the bottle taking into work on accident. It held up very well and just scuffed the bottle, no actual dent. I dropped it from about 3 feet off the ground because it fell out of my duffle bag as I was searching for my ID to gain access to a building.
648620
I know that I have used it after 6 months and the strength does not seem to be any less than when I first get it. Like any gum, it gets harder with age, but once you chew it it softens right up. I am never without it in the car.