When it comes to the order of applying skincare products, it's generally recommended to follow a sequence that allows for optimal absorption and efficacy. In the case of using a serum and snail mucin, the general rule is to apply products in order of their consistency, from thinnest to thickest.

Based on this principle, it is suggested to apply the serum before the snail mucin. Serums typically have a lighter consistency and are formulated with smaller molecules, allowing them to penetrate the skin more easily. By applying the serum first, you can ensure that its active ingredients penetrate the skin effectively.

Once the serum has been applied and absorbed, you can follow it up with the snail mucin. Snail mucin products often have a thicker, gel-like consistency, which can provide a protective barrier and help lock in moisture. Applying the snail mucin after the serum allows it to act as a moisturizing layer on top, sealing in the benefits of the serum.

Remember, everyone's skin is unique, and it's essential to listen to your skin's needs and adjust your skincare routine accordingly. If you find that applying the snail mucin before the serum works better for your skin, feel free to experiment and find the order that gives you the best results.