Sun tanning is to be avoided before the treatment as any amount of sun tanning will make the treatment less effective. Tanning is also to be avoided immediately after treatment as the skin is particularly sensitive to UV light. It is recommended to use a broad-spectrum (UVA/UVB) sunscreen after the treatments and avoid sun-exposure as much as possible. Cosmetics can be applied to the treated areas such as face. Additionally, as SHR targets the pigment, melanin in the hair follicle, any waxing, tweezing and electrolysis should be avoided prior to the treatment. The area to be treated may be shaved one day before treatment.