Hamamelis Virginiana proved effective in a study to treat sensitive scalp. 1,373 patients, including 1233 women and 140 men, underwent a series of treatments from 2010 to 2013 with the extract of this plant and reported an improvement in subjective manifestations of irritation (1).

Despite its use in tattoo ink, the skin complications of tattooing are known, one of which is the "Sparing phenomenon", purple lesions (2).

Hamamelis virginiana has long been used in the traditional treatment of skin diseases. Its anti-inflammatory action has been confirmed with a suppression of sunburn by approximately 20% in 7 hours and 27% in 48 hours (3).

References_______________________________________________________________________

(1) Trüeb RM. North American Virginian Witch Hazel (Hamamelis virginiana): Based Scalp Care and Protection for Sensitive Scalp, Red Scalp, and Scalp Burn-Out. Int J Trichology. 2014 Jul;6(3):100-3. doi: 10.4103/0974-7753.139079.

(2) Pinal-Fernandez I, Solans-Laqué R. The 'sparing phenomenon' of purpuric rash over tattooed skin. Dermatology. 2014;228(1):27-30. doi: 10.1159/000356779. 

(3) Hughes-Formella BJ, Bohnsack K, Rippke F, Benner G, Rudolph M, Tausch I, Gassmueller J. Anti-inflammatory effect of hamamelis lotion in a UVB erythema test. Dermatology. 1998;196(3):316-22. doi: 10.1159/000017904.