The world leader in the science of skin care
Nitrogen Purging

An ideal preservative for high potency skin care products, which often come in liquid form.



Winston Medical Supply Co. is the only pharmaceutical factory

in possession of medical-grade nitrogen air production system in Taiwan.

Dr. PGA uses medical-grade, 99.9% pure nitrogen in its product packaging.

Regular testing of nitrogen gas concentration is conducted

to ensure product quality and conformance to specifications.