Theophylline is an odorless white crystalline powder. Odorless. Bitter taste. (NTP, 1992)
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Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Tonic
Brightens uneven skin tone
Locks in moisture
Traditional Use
Alkaloid derived from tea leaves and cacao, known in traditional Chinese and Ayurvedic medicine for stimulating properties. Isolated and synthesized in the 19th century; used in modern cosmetics for its potential to improve circulation and reduce puffiness.