Promoting your video will make your video appear on other peoples fyp through an ad, which means that the promote feature does not interfere with your videos organic reach! This is very important, meaning it can only do good for your account and it doesn't hurt anyone else's account or anything.

Does promoting on TikTok work?

Promote is an advertising tool you can use in your TikTok app to help you get more people to discover your videos, guide more people to your website, and improve your chances to gain followers. This means that your video will be displayed as an ad for the time that you Promote your video.

Does TikTok promote cost money?

Tips for Creating Successful Campaigns

TikTok ads start at $10 per CPM. Reports from AdAge in late 2019 show that TikTok's cost of advertising can be between $50,000 to $120,000 depending on the ad format and duration.