Origin: Our lactic acid is produced via the fermentation of a cultured bacteria via biotechnology.
It is a water soluble solution of around 88% strength.
Lactic Acid is a strong Alpha-Hydroxy Acid and hence will have excellent exfoliant properties, although these are weaker than, but second only to, Glycolic Acid. AHA products can be used as a stand-alone treatment. While AHA can be included in other products there are certain incompatibilities that may arise with AHAs due to their requirement for a low pH.
Lactic Acid products should have a pH of 3.3 to 4.0 for safety while maintaining effectiveness (Note at pH 5.5 AHAs are totally ineffective).
Lactic Acid has a pKa of 3.86 which means at pH 3.86 the solution will contain 50% Lactic Acid and 50% Lactate salt. Reducing the pH by 0.5 pH units to pH 3.36 is enough to shift that equilibrium in favour of the acid and a pH of 2.86 over 90% of the ingredient will exist in acid form.
If you want to use a concentrated AHA then you will find most references suggest Glycolic Acid. However, while this is cheap and obtained in 70% liquid form, because of its apparent activity it has its dangers in that it will quickly burn skin with disastrous consequences. The TGA and the SUSDP (Poisons Committee) have legislated that Glycolic acid at should be used at a maximum of 30% (and preferably no more than 20%) and a pH of greater than 3.5. Otherwise they would be considered therapeutic goods and have various poisons warnings on the label.
In terms of Lactic Acid in-use concentration we suggest working between 5 - 20%.
New Directions Australia Pty Ltd. does not supply food grade raw materials and therefore cannot waive GST.
Prior to use: Customers should always refer to the Material Safety Data Sheet / Specification Sheet OR the ingredients label as affixed to each product which are current at the time of supply of the product.
The information provided is for educational purposes only. Individuals receiving this information must exercise their independent judgment in determining its appropriateness for a particular purpose or use.As the ordinary or otherwise use(s) of products is outside the control of New Directions Australia Pty Ltd., no representation or warranty, expressed or implied, is made as to the effect(s) of such use(s), (including damage or injury), or the results obtained. New Directions Australia Pty Ltd. expressly disclaims responsibility as to the ordinary or otherwise use(s). Furthermore, nothing contained herein should be considered as a recommendation by New Directions Australia Pty Ltd. as to the fitness for any use. The liability of New Directions Australia Pty Ltd. is limited to the value of the goods and does not include any consequential losses.