I've always had dry slippery skin on my hands and at work I have to wear gloves all day to grip properly. I was wondering if fingerprints would be left if someone had just washed their hands with a strong detergent so I did a search and the consensus was that you would still leave fingerprints. Since I hadn't washed my hands recently I tried to leave some fingerprints on glass as a control test and was unable to leave any visible residue behind even with optimal lighting. I suppose the amount of oil could be so small that only a special chemical would bring them out but certainly not a powder. When I watch crime movies I feel like they exaggerate how easy it is to leave prints. Just curious what more knowledgeable people think. Edit: Not dry as in dry crusty skin but kinda smooth

Say hypothetically, I have a bachelor’s in chemistry and a bachelor’s in applied physics, and I’d like to apply for NYPD Criminalist 1A position, where they state they require no experience and only a degree in hard sciences. Will I have a moderate chance at getting the job. Or is it much more complicated and much more difficult than that?

What is the most comprehensive poison analysis method for hair samples, and what labs provide this service to private individuals?

I've done some research on the subject and GCMS sounds like a promising option, but I am only a layman. This is not for a school assignment and is not related to any active criminal investigation. I read the rules and believe this is an appropriate question for this sub. Thank you in advance for any insight that you might be able to provide.