Collagen can be sold on Tiktok, yes

Tiktok stores can sell domestic legal goods. TikTok Shop has been online for a long time, and recently opened sites in Malaysia, Thailand, the Philippines, and Vietnam. For sellers who are already doing Shopee or Lazada, it is a good attempt.

As long as you are doing cross-border e-commerce in Southeast Asia, then you can move Shopee products to other platforms. Shopee is known as the Southeast Asian version of Pinduoduo, and it is not in vain. Even if there is no source of goods, you can add a price based on Shopee products and put them on Lazada, Tiktok stores, independent stations, etc.