The plant extracts used in the products live according to the seasons , and because of this, the pigment or scent absorbed from them may naturally vary depending on the batch. For example, Bacteriostat Cleanser, whose coloring is strong yellow during the turmeric season, or Follicle Clearing Lotion, whose scent is slightly stronger during the cinnamon season. BiON Skincare products do not contain added perfumes, but this does not make the products fragrance-free. It is therefore normal that there may be normal fragrance variations between batches. The emulsifiers in the cleaning products are plant-based (oat amino acids) and they live according to the seasons and the climate. For example, a warm and dry climate when oats are harvested from crops may sometimes affect the moisture binding capacity of amino acids. In this case, shaking the product makes it easier for the oat amino acids to mix with the liquid, so the thickness of the gel is restored.