A disposable material, pre-cut to various shapes or able to be cut or shaped at the time of use, to protect non-target tissue, excluding the eyes, during treatment of the skin is disclosed. The disposable material comprises a flexible material comprising at least one first layer comprising a material that mitigates the transmission of electromagnetic radiation from an radiation source； a backing layer that is located on top of the first layer and is configured to diffusively reflect the electromagnetic radiation without direct specular reflection； and an adhesive for removably attaching the disposable material to the skin. There is also disclosed a method of protecting non-target tissue, excluding the eyes, by applying the disclosed material to a desired location.
