Abstract: Disclosed is a vaporizable substance application tool having an integrated ideal temperature indicator. In one embodiment, an apparatus includes an applicator, a thermocouple, and a temperature indicator. The applicator is positioned on a first end of the apparatus to apply a vaporizable substance onto a heatable surface. The thermocouple is positioned on a second end of the apparatus. The temperature indicator is positioned between the applicator and the thermocouple. In addition, the temperature indicator of the apparatus visually indicates different temperature states. In a first state, a background of the temperature indicator illuminates in a first color when the temperature is below an ideal range. In a second state, the background of the temperature indicator illuminates in a second color when the temperature is within the ideal range. In a third state, the background of the temperature indicator illuminates in a third color when the temperature exceeds the ideal range.