This treatment will certainly not be the cure and can only be efficient temporarily. PGD-2, as shown by many scientific papers, is upregulated during immune response. If we inhibit COX or PGD-2, we do not deal with the root cause - namely, whatever triggers the autoimmune reaction leading to hair follicle cell aptosis and scarring of our scalp. PGD-2 is not at the root of events here at all, it is only upregulated as a consequence. Still, it might be possible that it might be effective to have a local immune supressant or COX/PGD-2 inhibitor just for these reasons: to stop follicle aptosis and to stop scarring of scalp tissue.