Question: what do i do if my eyebrows are too thin?
Answer: Stop tweezing them. Yes, your eyebrows may grow on random spots and make you look unkempt (!!) but if you stop plucking or waxing them, there's a good chance you can grow better brows. ... 
Tweeze them in a row method. ... 
Exfoliate them. ... 
Use brow razors. ... 
Put on serum. ... 
Fill them in.