Strategies To Lose Weight Fast

I have lost around 20 pounds and this has affected my skin and hair the most. My face looks pretty but does not glow like before and looks thin too, also my hair are nearly 1/2 of what they use to be. I had really long hair, still long but very thin. I still got to lose 8 pounds and gain some on my face to get the glow , what do I do? Is it possible to get back my fce and hair once I stop weight loss and start maintaining.