Lactic Acid

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Lactic acid, also known as milk acid or 2-hydroxypropanoic acid, is a chemical compound that plays a role in several biochemical processes. Lactic acid is a carboxylic acid with a chemical formula of C3H6O3. It has a hydroxyl group adjacent to the carboxylic acid, making it an alpha hydroxy acid (AHA). In solution, it can lose a proton from the acidic group, producing the lactate ion CH3CHOHCOO-.

Lactic acid is chiral and has two optical isomers. One is known as L-(+)-lactic acid or (S)-lactic acid and the other, its mirror image, is D-(-)-lactic acid or ®-lactic acid. L-(+)-Lactic acid is the biologically important isomer.

HUH?

Lactic acid is popularly known as an AHA in the cosmetics industry. It is widely used as a milder alternative to glycolic acid. It is primarily used as an anti-aging chemical claimed to soften lines, reduce photodamage from the sun, improve skin texture and tone and improve overall appearance.

Several precautions should be taken when using lactic acid as a cosmetic agent because it can increase UV sensitivity to the sun.

Lactic Acid not only is a superior exfoliant, but may be one of the best treatments yet for hyper-pigmentation.



Lactic Acid is another Alpha Hydroxy Acid, like Glycolic Acid, but the 50% strength is a little stronger than the Glycolic Acid Peels but less irritating to the skin than Glycolic Acid.

Lactic Acid occurs naturally in the skin and is a primary component of the skins natural moisturizing factor.

The use of Lactic Acid will help to stimulate and speed skin cell turnover on the surface of the skin, thereby producing more vibrant and smoother-looking skin.

In the deeper layers of skin, new collagen and elastin will be stimulated and the skin will actually become thicker, tighter and more firm.

Lactic Acid is derived from sour milk, and is much milder on the skin versus other peels. The peeling process is very similar to how Glycolic Acid works. It has many important qualities, number one being that it is milder than other peels as mentioned above, so people with sensitive skin can apply this peel and see the same results as stronger peels. If you have Rosacea, this is a better peel for you than Glycolic Acid.

Also, if you are new to acid peels this may be the one for you. It also can be used for the following:

Acne, Acne Scars, Blackheads/Whiteheads, Dry Skin, Sun-damaged Skin, Blotchy Pigmentation, Fine Wrinkles, Loss of Elasticity, Large Pores, Bumps, Age Spots, Eczema, Seborrheic Keratosis, Hyperkeratosis, Actinic keratosis, and Rosacea.

50% Lactic Acid (pH 2.0) Great for Wrinkles/Mature skin, as well as all skin types. This is our strongest peel and will show the fastest results, but if you are new to acid peels, we recommend to use the 40% Lactic Acid first.

40% Lactic Acid (pH 2.2) Used on dry, dehydrated, and normal skin. Perfect for first time Acid Peel users.

30% Lactic Acid (pH 2.3) Used on sensitive, dry, oily, acne prone, or dehydrated skin. This is our weakest peel and will show the same results as the above peels, but is a more gradual process. If you have red, sensitive skin, and it is your first peel, we suggest this strength.

 
<checks frig> Hey, I got some right here! LOLOLOL

Seriously though, Kim, thanks for posting this. Figuring out the particular benefit from each of the acids and the properties can be mind-boggling!

 
Thanks SO much Kim for the wealth of information you've been providing! I'm going to print this out along w/ glycolic thread.

 
That's very interesting. It looks like some products from MD Formulations, Dermalogica, Philosophy, Murad and more contain lactic acid. I definitely need to check this out!

 
Too funny! I have the opposite problem here........with my kids, we go thru a gallon of milk a day.

 
Great article again Kim. Never tried Lactic acid, but I will do so. I'll give it a try and see how it works. I'm using glycolic right now, but I'll have to see how Lactic works for me. Thanks for the article and info! :sdrop:

 
I want to try an acid peel, but am scared to do it at home since I have ethnic skin and scarring if things go awry is a huge worry...Maybe lactic is the way to go, specially since I live in Nevada and my skin gets uber-dry. Where can I buy a sample size?

 
:smilehappyyes:Thanks Kim. I ordered a 40% peel from DianaYvonne on Friday and can't wait to try it!
 
I just ordered the 40% lactic too .... from the info Kim put out on the different acids, this seems to be the best to even out skin tone. Can't wait to give it a go!

 
:icon_ques Got my little sampler from D/Y and no instructions. I found on another site to leave it on for 5-7 minutes (after a patch test of course). I have to work tomorrow and was wondering if I should wait until the weekend. Does it make your skin really red? I guess that depends on the person....
 

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