Are medical methods permissible in cases like psoriasis, hair loss and eyebrow loss?

- I lost my eyebrows and eyelashes due to an illness. I found a kind of permanent make-up done with mineral pigments based on the method of applying those pigments under the skin. I know that it will not prevent wudu since it is applied under the skin.  

- What is the decree about this application? Does it mean to change the creation? Is it like tattoo? Or, is it like normal make-up that should not be shown to non-mahram men?

- Is it permissible to use medical methods like that in cases of loss of the color of the skin due to vitiligo and psoriasis, in order to cover the scars or the traces of stitches after an operation, in women who underwent mastectomy and whose nipples, breast color and shape were deformed, in people who lost their eyebrows and eyelashes due to chemotherapy and cancer treatment in order to enable those people to lead their social lives more happily?

Dear Brother / Sister,

Operations and applications made to normalize an abnormal organ, to prevent a normal organ from deformation, to cure an organ that has been harmed, to eliminate something that troubles man physically or spiritually, etc. are not included in the scope of damned changes and are permissible.

Questions on Islam