An improved heated, integral applicator for flowable cosmetic and dermatologic products comprising flexible printed circuits and, optionally, flexible heater technology. The present invention is safer to use and has more reliable electronics than the prior art; is more convenient to use and carry; is capable of precise dosing; is simpler and cheaper to manufacture and assemble; offers special applicator tips for precise application of treatment and makeup products. The present invention is useful for applying cosmetic and dermatologic treatment products of all types, including products to treat skin, hair and nails. Suitable skin treatment products include those effective at deeper layers of the skin.