Be honest with yourselfhave you washed your face rollers andgua sha toolslately?

Wet your hands with warm water and pour some soap onto your hands, she says.

Create a lather and apply it to a wet gua sha tool for 30 seconds.

woman getting gua sha facial

Kanawa_Studio / Getty Images / Byrdie

Rinse with warm water and dry with a soft clothmicrofiber is great for this.

So many people have shared their sob story of a slipped gua sha stone.

The more porous the material, the more often it needs to be cleaned, Farhang says.

Metalslike silver and copperare the least porous but not very commonly used [for gua sha tools].

Wooden gua sha tools tend to be porous and may be more difficult to clean, she adds.

Immediately after each use is best, she says.

Its this residue that can absorb into the tool and potentially lead to skin irritation.

Doing so will eliminate any residual bacteria.

There is a difference between gua sha for face and body and medical gua sha, she says.

Facial gua sha has a much more gentle technique and is generally safe for most to do at home.

Chen T, Liu N, Liu J, et al.

Gua Sha, a press-stroke treatment of the skin, boosts the immune response to intradermal vaccination.

2016;4:e2451.