Welp, Biotin for hair and nails and birth control for skin has been working for me. Biotin has given be rather nice nails. They are long and really durable. My hair has been growing steadily too. Birth control cleared up my skin for me, and fast. Gave me a very even complexion in a month and I haven't had problems with my period since. I'm not big on make up but it is nice to be able to walk out of the house and not worry about putting something on my skin. I'm not sure if you are on it already or don't want to take it, but know, people get mixed results with birth control. Something else you can do for your hair (and skin) is drinking 64oz of water daily and finding out what works for you. For instance, I can't use anything with alcohol in my hair. So now, 90% of my hair products come from etsy.com since I know exactly what's in it and can talk to vendors directly about their products. Shampoo bars are so much fun and your choices are endless. There are many options you could use other than progesterone cream. Shea butter, olive oil and coconut oil (yes, the same one you use for cooking), egg washes, mayonnaise (if you can tolerate the smell in your hair), apple cider vinegar rinses, coffee rinses, making your own scrubs. I can spend days on this type of stuff, but if you have anymore questions, please feel free to send me a message! I'd love to share some of my hair/skin/nail knowledge with someone else!

oh thank u for ur advice i forgot to mention that i cant take birth control pills, i tried taking diff ones but all of them give me ALL the bad side effects that come with them so they arent safe for me. :( thats y im looking for alternatives.

Birth control pills make me nuts so I have to be careful taking them. I have found that by drinking more water and eating more healthy I have been able to help improve my skin and hair. I also take regular multi vitamins and supplements that are really good quality and do help with the quality of my skin and hair. I know that prenatal vitamins can help make your hair and nails grow, but it can also make your hair and nails very thin, so it is not quality growth. I use olive oil and coconut oils only in foods that I eat, which also seems to make a big difference.
I think that with good quality foods, lots of water and great skin products, that I actually use; I have been able to keep my skin in great condition as well. I also go and get a facial done once every few months. This helps to pull out the impurities in your skin and will help your skin look better in the long run. But a facial is not something that you want to do right before a big event, since it can make your skin worse before it will make it better.