What skin conditions are not suitable for skin camouflage?

As laid out by the British association of Skin Camouflage, skin conditions that require medical attention must not be covered using skin camouflage, as follows:

allergic reactions
blisters
pustular forms of psoriais
chilblain
viral infections, herpes simplex, herpes zoster (shingles) and warts
illnesses that manifest on skin visually (chickenpox, measles)
infestations (scabies, lice)
skin cancers
bacterial and fungal infections (ringworm)
occupational/contact dermatitis
open wound or stitches
photodermatoses (actinic dermatitis)
rashes

It is always advised to seek medical advice before proceeding with skin camouflage.