Here allow me to recommend a popular spa treatment cap to you.
This hair care spa cap with flame-retardant electronic temperature control function is a safe and convenient tool for nursing your hair at home.
The inner embedded plastic film is waterproof and anti-electricity, and it's detachable and convenient to be washed.
Two level of temperature controlling, you can adjust to your favorite temperature.
Click here: Hair Thermal Steamer Treatment SPA Cap Nourishing Hair Care Hat - US$9.99