Affiliate Marketing Secrets

I started a youtube channel a week ago, it is about makeup. I have already reached 250 subscribers. I noticed people with less subscribers (like 100-150) have been sent free products to review and giveaway. I have already signed up to be a sigma affiliate…and I tried to contact coastal scents, but got no response.
Do you know of any companies that would send me free products to review and maybe some extras for a 300 subscriber giveaway?
Thanks for the help!