Buse D.
Google
Be prepared for a very crowded place. It is always busy. However, the prices are about 10% cheaper, and you can also get tax free.
When you go, definitely ask for Taha. He is very helpful, explains everything clearly, and really takes his time to assist you.
The ground floor is for beauty products, and the upper floors are for medicines. Compared to many other countries, the prices are very reasonable. Even though it is very crowded, you can easily find original French brands.