Also, competitors can come in quickly so if you don't have a differentiated product good luck.
margins will be small and probably shrink due to competition.
In the current economic environment, discretionary income is shrinking.
with all that said if you want to create a social media account around honestly reviewing social media viral products you could create a "business" that monetizes with affiliate marketing and/or drop shipping. make sure your disclosing that fact. I would personally niche into products I actually wanted to buy.
Then you can always sell the product on ebay after you've reviewed it.
https://en.wikipedia.org/wiki/Drop_shipping
If you want to create a successful business, you should focus on creating value, not extracting money.
Dropshipping doesn't work at all, just build a real business.