可以把皮肤想成一堵墙：墙上有洞时，往里面灌什么都留不住，还会刺激墙体本身。

SBT 主张的次序是：先评估（是否漏）→ 补充（砖与浆）→ 重建（三层防御）→ 耐受（低频渐进），再谈功效叠加。

这也是宝措卤阳® 修护水 / 修护乳 / 修护霜以屏障修护为主轴、而不是以猛药为主轴的原因。

The SBT sequence is: assess (is it leaking) → replenish (bricks and mortar) → rebuild (three layers) → tolerate (gradual), and only then layer on actives.

This is why the Baocuo Luyang® repair water / lotion / cream are built around barrier repair rather than aggressive actives.