Very occasionally you can achieve the perfect colour match but the condition you are covering will still be slightly visible, we call this a bleed through.
Malasma/Chloasma can occasionally appear with a faint greenish tone, scars particularly self harm scars can appear to have a silvery quality and tattoos can have a yellowish tint.
If this happens to you we recommend that you block the area first with a product https://www.skincamouflageuk.uk/retin-a-tretinoin-20gm/ such as Dermacolour D32
Apply a thin layer of your blocking agent, allow it to dry naturally then simply camouflage over the top and add your fixing powder as
Have a quick look at our gallery page and you will see Helen’s tattoo being blocked with D32