Temporary/ permanent solution to birthmark?

For a temporary solution I'd get some cover up that is used to cover tattoo's you can get it at sophora, ulta, or any other cosmetic retail shop. what you would want to to is put it on in layers. Id also get some finishing powder to help in last. when putting on each layer spread on a thin coat with a sponge, let it dry and puff the finishing powder to set in then repeat till in is covered enough to your liking. I do theater makeup and Ive used derma blend (at ulta for $26) with bed nye finishing powder ( you can use any finishing powder, like physicians formula for $11) on an actress to cover a tattoo and it worked very well and lasted the whole performance even with costume changes..remember to ask a sales istant to match it to your skin for your pit I'd test on your inner arm,.. hope that helps