I'm 27, am I too young to get Botox? Will it damage/worsen my skin as I age? Should I wait until I have more wrinkles?

Everyone has a unique anatomy and tendency to make facial expressions.  The more expressive you are - the more you are exercising the muscles and they will eventually form creases at rest.   It's normal to see wrinkles in motion when you elevate your eyebrows.  The big question is do you see the lines at rest?   If so  - then Botox may be a good option.  Botox works on stopping the muscles in motion in 3-7 days and the effect is temporary - lasting 3-4 months.  The horizontal lines you are describing are more difficult to treat than the crow's feet or glabellar (#11 lines) - so find an experienced injector who will maintain your natural anatomy without "spocking" or "dropping" the eyebrows.

Botox is a fabulous preventive treatment for those lines that are caused by excessive or habitual muscle movement.  27 is not too young if you have lines that are forming from constantly creasing the skin.  The treatment is safe and lasts anywhere from 3-6 months for most people.  Thanks for your question!