The non-greasy, odorless Ultra 30 Insect Repellent Lotion from Sawyer combines 30 percent DEET with a comfortable liposome base for up to 11 hours of protection against mosquitoes, ticks, flies, chiggers, fleas, and no-see-ums. It's comfortable for use in the backcountry or in the backyard.
Similar to the earlier generation of polymer-based controlled release systems, the Liposome envelops the active ingredient, DEET, and slowly time-releases it as needed, thereby extending the effectiveness of the repellent. Unlike polymers, however, liposomes are a natural compound more often used in cosmetics, which allows this formula to be comfortable to the skin, easier to wear, and practically odorless.
Sawyer Ultra 30 is also non-staining, compatible with sunscreens, and sweat proof.