In a nutshell Stingfree products provide a barrier between the users' gums and the high pH content and aromas that are stored inside pouched products.
Most nicotine pouch products, such as snus or All White/Modern oral nicotine pouches, cause an unpleasant stinging or burning sensation when placed against a user's gum. It is also common for pouch users to experience oral health problems such snus lesions and even irreparable receding gums.
Stingfree removes the stinging by placing a protective barrier on the gum side of the pouch.
The barrier protects the gum but flavor, scent and nicotine can still pass through the unprotected white side of the pouch.