Contact dermatitis

Contact dermatitis is an allergic reaction of the skin to a particular substance. It occurs when the substance comes into direct contact with the skin. There are two main types of contact dermatitis: Allergic Contact Dermatitis: Allergic contact dermatitis is a...

Contamination

Contamination is the presence of harmful substances or organisms in or on something. In the context of beauty and esthetics, contamination can refer to the presence of blood or other potentially infectious materials (OPIM) on surfaces or in products. Contamination can...

Contraindication

A contraindication is a factor or condition that makes a particular treatment or procedure inadvisable or unsafe. In the context of beauty and esthetics, contraindications can refer to any factors that could make a treatment or procedure harmful or ineffective....