Smart Skin Care Forums
Home  -   Forum Index  -   Search  -   Register  -   Profile  -   Log in  -   FAQ  -   Contact Us

Buffering Glycolic Acid with Ammonium Hydroxide

 
Post new topic   Reply to topic    Smart Skin Care Forum Index -> Exfoliants
View previous topic :: View next topic  
Author Message
Mike



Joined: 29 Sep 2006
Posts: 121

PostPosted: Fri Sep 29, 2006 10:49 pm    Post subject: Buffering Glycolic Acid with Ammonium Hydroxide Reply with quote

Dr T,
What are the advantages and disadvantages of having a glycolic acid prodcut buffered with ammonium hydroxide?
Thanks for your time!
Mike
Back to top
View user's profile Visit poster's website
drtodorov
Site Admin


Joined: 10 Dec 2004
Posts: 3254

PostPosted: Sat Sep 30, 2006 8:54 pm    Post subject: Reply with quote

What do you intend to use it for?
Back to top
View user's profile Send e-mail
Mike



Joined: 29 Sep 2006
Posts: 121

PostPosted: Sat Sep 30, 2006 9:57 pm    Post subject: Reply with quote

My intention was to use it for acne in some people and for exfoliation in others. My understanding is that glycolic acid can help empty pores which are filled with sebum, bits and pieces of stratum corneum and a whole host of things which tend to cause the pore to develop a plug. For those folks that don't have acne, I was hoping that the glycoic acid would benefit the dermis, especially if the skin was pretreated with salicylic acid. How does buffering the pH (increasing the pH) of glycolic acid affect it's function?
Back to top
View user's profile Visit poster's website
drtodorov
Site Admin


Joined: 10 Dec 2004
Posts: 3254

PostPosted: Sun Oct 01, 2006 2:08 am    Post subject: Reply with quote

For acne AHA do not seem to provide additional benefit if added to AHA. For exfoliation, BHA do not seem to provide additional benefit if added to AHA.
Back to top
View user's profile Send e-mail
Mike



Joined: 29 Sep 2006
Posts: 121

PostPosted: Sat Oct 21, 2006 10:31 pm    Post subject: Reply with quote

Does buffering the Glycolic acid negate the effect of increasing the percentage of Glycolic acid? In other words, if the final product is going to have a pH of about 4.0, does it make any difference if the percentage of glycolic acid is 10% vs 15% vs 20% or more?
Back to top
View user's profile Visit poster's website
drtodorov
Site Admin


Joined: 10 Dec 2004
Posts: 3254

PostPosted: Sat Oct 21, 2006 11:03 pm    Post subject: Reply with quote

Probably partly but not entirely. It seems that skin effects of AHA are the result of both pH and the specific activity of anion (at least as far as lactic and glycolic acids are concerned).
Back to top
View user's profile Send e-mail
Mike



Joined: 29 Sep 2006
Posts: 121

PostPosted: Sat Oct 21, 2006 11:18 pm    Post subject: Reply with quote

Is there an ideal pH for products that are not intended to be uses as exfoliants? Or would the ideal pH be dependent on the active ingredient that you are trying to get into the dermis?
Thanks for your time!
Mike
Back to top
View user's profile Visit poster's website
drtodorov
Site Admin


Joined: 10 Dec 2004
Posts: 3254

PostPosted: Sun Oct 22, 2006 12:41 am    Post subject: Reply with quote

Ideal pH depends on what skin can tolerate and what active ingredients are used. Each active ingredient has its own dependency of ionization state on pH, which affects penetration. If you are not concerned about exfoliation or penetration of actives (or actives are lipophilic), then you should match the pH of the skin's acid mantle (4 to 5.5).
Back to top
View user's profile Send e-mail
Gabrieljon



Joined: 12 Apr 2016
Posts: 2
Location: Estonia

PostPosted: Sat Apr 16, 2016 5:54 am    Post subject: Buffering Glycolic Acid with Ammonium Hydroxide Reply with quote

anyone else tried glycolic acid to prevent breakouts and help scars fade and heal fast?
Back to top
View user's profile Send e-mail AIM Address Yahoo Messenger
Display posts from previous:   
Post new topic   Reply to topic    Smart Skin Care Forum Index -> Exfoliants All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group