What is the difference between essence, serum, and ampoule?

Looking at it this way, it has high ingredient and concentration content. You might be thinking, "Aren't ampoules the best?"

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Since the right product varies depending on skin type If your skin is severely dry, or

In cases where restoring elasticity is urgent The ampoule might be more effective, but

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For oily or greasy skin A slightly lighter serum or essence might suit you better.