Your English is great by the way. You write English way better than I write Portuguese or Spanish and I've studied the latter for years.
Honestly it is heartbreaking for us to know our babies are being teased and we want to protect them at all times, but I think the better thing to do is to teach her to handle it. I don't think there is a painless, chemical free way of dealing with body hair....so the best thing is to just teach her to deal with it until she's older and can deal with the hair.
My daughter was teased because her hair was so long. Then she was teased and called ugly by boys on the bus. Then they teased her because her lunches were yucky (meaning full of nutritious things like fruit). Then she was teased because she wears dresses all the time and they said she dressed fancy to school (our church prefers girls in dresses to encourage girls to be proper young ladies). Oh the list goes on.
I was teased because my hair was straight and my mother did my hair in a 60's kinda look instead of the popular feathered bangs of the 70's...she didn't know how to do that. I was teased because my teeth were crooked and I had an overbite.
Basically I talked to my daughter about all these situations and I taught her how to respond calmly and directly to teasing.
She asked the little boys on the bus if they enjoyed teasing her? And when the one said yes, she told them bluntly and directly that she did NOT like it at all. The one apologized for hurting her feeling and the other just stopped talking to her.
At school she calmly told the kids teasing her about her lunch that her mother loved her a whole bunch and wanted her to be healthy so her mommy took a long time in the morning to make her a good, healthy lunch...and since they didn't have to eat it, they just needed to stop worrying about what she ate.
She told the kids that she didn't tease them about wearing jeans and shorts and looking like they were in their play clothes everyday....and they didn't buy her clothes so they shouldn't say anything.
I've taught her to always be nice and polite...and if a kid just won't stop, then to look at them directly and tell them that she is just not going to listen to a mean person or be friends with a mean person. Then go find someone else to play with.
I explained that she has to act like she doesn't care even if it hurts her and then she can talk to mommy and cry if she needs to, but don't cry in front of other kids. If she's confident then most kids will stop.
She's done very well thus far this year...she even had a little girl make fun of her when she was really excited and told the teacher she was saved and babtized at church and she was so excited to go to heaven one day. The little girl told her she was stupid and there was no Jesus. My daughter just told her you believe what you believe and I believe what I believe and I'm not making fun of you because you don't believe in anything.
At any rate, she's done well. I'm working on my second child who is four and got hysterical when the neighbor stuck her tongue out at her yesterday. She's not quite the wit her sister is and seems to be a little more sensitive, but I'll each her to grow a spine. Can't go through life with your heart on your sleeve or you will always be the victem.
So I would say to teach her to deal with it for now and then you two can take care of it chemically or with lazer later when she's older.