The reason collagen banking is needed is that in your 30s, when collagen has already begun to decrease, stimulating production in advance to preserve the 'remaining assets' is more efficient than trying to recover later. Skin collagen is believed to gradually decrease by about 1% per year starting from the mid-20s, and in your 30s, this decrease begins to appear as a subtle loss of elasticity.
Collagen banking is a concept of maintaining the ability to produce collagen by consistently applying low-intensity stimulation before collagen significantly breaks down. Rather than reversing already deep wrinkles, managing it while there is still leeway tends to be less burdensome in terms of treatment intensity and number of sessions.
However, collagen banking is only a metaphor of 'saving' and is not a concept of unlimited accumulation; it is meaningful only when supported by basic care such as sun protection and lifestyle habits. The necessary timing and method may vary depending on individual skin condition.




