And you know this how? (Knowing full well that you may be in that field due to your handle).
For instance, my father had a client some years ago who was arrested stealing women's clothes from public laundry mats. Knowing there's no cure for the underline fetishism that compelled the young man to want the clothes, he concentrated on teaching him to recognize that stealing them was unexceptionable. That showing restraint and buying them would help his life - and mentality - be less chaotic and more stable. To the best of my dads knowledge, that client never had trouble with the law again. Ironically, he had another client a couple years later in the same situation who failed miserably and continued to have trouble with the law.
It was a professional annoyance to dad that he had two court-ordered clients in the same situation, but one failed where the other seemed to succeed. "You can't help them all" was his frustrated take on it.
But I'm not making an excuse for the idea of allowing these people to indulge in makeup and, etc. It shouldn't be allowed as it defeats the purpose of jail. Personally, I don't think there should even be televisions in jail.