The most obvious thing you can do right away to nourish your skin, hair, and nails is to eat a proper diet and drink tons of water. Fresh fruits and vegetables are essential and trying to stay away from simple carbs and some dairy can also help. I know you've heard it a million times before, but I'll just say it to get it out of the way.
The second thing you can do is add some vitamin/mineral supplements to your routine. I have tried all of these so I can recommend them without reservation. However, I am not a doctor so... yeah, do your research and ask your doctor if you have any questions. And don't come after me if you start breaking into hives after taking any of these. (Sorry, gotta cover myself.)
Supplement Your Beauty With:
Biotin is great for growing hair super fast. I can definitely attest to that. The only thing I have noticed with this is sometimes it can cause me to break out a little - not any big cysts, but just superficial whiteheads. It's weird. So if you take Biotin and notice a few changes in your skin, this might be the culprit. If you have perfect skin, this would probably be a great supplement for you.
I take Vitamin A specifically for my skin, but I take a Vitamin A&D supplement so I can also get an immunity boost from the Vitamin D. Retinols (including Retin A), Accutane, and other skin treatments have a high concentration of Vitamin A as one of their main ingredients, so it only makes sense to me to get an extra boost of Vitamin A. I am a long time sufferer of hormonal/cystic acne and I have noticed a great improvement in my skin from using the Vitamin A. I do also take other supplements, so it could be the combination of everything. I will say, though, that if I leave out my Vitamin A for a couple of days, I am more susceptible to develop a cyst. I say it's worth a try because there are also other benefits to taking Vitamin A.
Silica Capsules (Horestail Extract)
I have been taking prenatal vitamins ever since I found out I was pregnant. I have since continued to take them because I am nursing, but I really think I am going to continue to take them even after K is weaned. My nails are the strongest they have ever been in my life. And let me tell you, I have very brittle nails that are thin, have ridges, and break easily. I also used to get a lot of hang nails. No more after taking these. I think the benefits of taking prenatals are just so many that it is a good idea to take them, even while not pregnant or nursing. They are just perfect for women my age.
Hopefully that helps you in your endeavors to promote beauty from within!
Are there any things that you do to promote healthy hair, skin, and nails? Do share!