Need idea of GST for herbal cosmetics

This discussion clarifies how to calculate Goods and Services Tax (GST) for herbal cosmetics. GST is applied to the transaction value, not the Maximum Retail Price (MRP). If you purchase products at 18% GST for £400 and sell them at £500, you'll pay GST on the £500 selling price and claim input tax credit (ITC) on the £400 purchase price. The difference in GST is what you'll pay via GSTR-3B.