Estée Lauder Essence in small brown bottle, repurchase for ten thousand years. It is a serum that I would "square" without it. I think its best effect is to stabilize the skin and maintain the balance of water and oil. The texture is thick and has a faint smell of traditional Chinese medicine. The essence is slightly brown. The small brown bottle of essence is mainly used at night, and the bottle is also thoughtfully made to avoid light, which is more conducive to storage. The design of the plastic tip dropper is convenient for drawing a quantitative amount of essence each time, and the design of the bottle mouth is small, which is also for better opening and preservation. I bought the largest bottle of 115ml and use it every day before going to bed. It can be used for half a year. Every year, I have to stock up on the amount of the eye cream for one year.