Allergic contact dermatitis to Tinosorb S, Scutellaria baicalensis , and other emerging allergens in cosmetics

Identification of the pigments used in permanent makeup and their ability to elicit allergic contact dermatitis

BACKGROUND

Decorative tattoos are known to contain ingredients that may elicit allergic contact dermatitis; it is less well-known if permanent makeup pigments carry the same risk.

OBJECTIVE

Identify pigments used in permanent makeup inks sold in the United States and review cases of allergic contact dermatitis to these pigments.

METHODS

Using internet searches, permanent makeup inks sold in the United States were identified. Safety data sheets were used to catalog pigments used in permanent makeup. A subsequent literature search was performed to identify cases of allergic contact dermatitis to these pigments.

RESULTS

A total of 974 permanent makeup inks were reviewed, and 79 unique pigments were identified. The average product contained 4 pigments. Twenty of the pigments were inorganic metals, including carbon, iron, chromium, manganese, and molybdenum. Fifty-nine pigments were organic, of which most were azo, quinacridone, or anthraquinone dyes. A literature search revealed that 10 of the 79 pigments were associated with allergic contact dermatitis.

CONCLUSION

Permanent makeup primarily uses organic pigments, although some metallic pigments are still used. Physicians should also be aware that some of these pigments-both organic and inorganic-are known causes of allergic contact dermatitis. Of note, patch testing to these ingredients can be negative.