Answer:
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
I am an animal and a hair product
I am pinched by grandmas
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
I start with T end with T and within me is T.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.