Lactic Acid is an alpha hydroxy acid that exfoliates the skin. This
5% formulation offers very mild exfoliation and is supported with a
purified Tasmanian pepperberry known to reduce signs of inflammation and
sensitivity that is often associated with exfoliation. A stronger 10%
formula is available
here.
This formula contains a studied Tasmanian Pepperberry derivative to
help reduce irritation associated with acid use. This derivative is of
plant origin and varies in colour seasonally and this colour variation
may be apparent in the formula from time to time.
Contraindications: Lactic Acid should not be used on sensitive, peeling
or compromised skin. Please refer to additional sun protection note and
other warnings in provided Directions.
This pH of
this formula is approximately 3.8. Lactic Acid has a pKa of 3.8 and pKa
is the most important aspect to consider in formulating with acids. pKa
implies acid availability. When pKa is close to pH, there is an ideal
balance between salt and acidity, maximizing effectiveness of the acid
and reducing irritation. Higher pH numbers in such a case would increase
salt which counter-intuitively would make the formula even more
irritating than if the formula was more acidic.
Note:
While Lactic Acid can result in quick visible benefits, we generally
suggest indirect forms of skin exfoliation in favour of direct forms
such as this formula due to potential inflammation and sensitivity
associated with acids. Please refer to
NIOD's Non-Acid Acid Precursor for such a reference.
Directions
Apply once per day, ideally in the PM. Can be diluted with
other treatments to reduce strength until skin develops tolerance. Avoid
contact with eyes. Contact of the product with the skin must be of
limited frequency or duration. If irritation occurs, cease use and
consult a physician. Use only as directed on unbroken skin. Patch
testing prior to use is advised. Refer to our
in-depth guide to patch testing. Keep out of reach of children.