What this site is for
This is patient education about uneven skin tone, published by Chongqing West District Hospital, a tertiary general hospital in Jiulongpo District, Chongqing. It is a concern guide rather than a procedure page: it answers why the skin looks uneven, whether it needs treating, which of the three causes is responsible, and in what order the options should be considered. The individual procedures and the medical management of skin disease are explained on the dermatology hub and on the pages for the specific patterns, and repeating them here would help nobody.
The order the site is built on
It separates before it treats. Brown pigment, red vessels and surface texture look alike at conversational distance and answer to three different plans, so the first question is not which product or which device but which category this is — and, within pigment, how deep the change sits. The ladder that follows is shared, but the rungs that matter differ: a vascular face and a textural face reach different steps and skip different ones, and melasma is the pattern where climbing quickly does harm rather than good. That order is not a preference; it is what the patterns respond to.
What it deliberately does not do
It does not name products or brands, quote prices or dosages, or promise a result. It does not present a lightening agent as a treatment for redness, or a device as a substitute for diagnosis. It does not describe any treatment as painless, risk-free or permanent, and it does not treat melasma as though aggressive work were a shortcut rather than a hazard. It does not suggest that the goal is a single uniform colour, because that goal is neither achievable nor desirable.
The limits of a website
Nothing here can tell you which of the three causes is behind your own unevenness, or how deep it sits. That requires a history covering hormones, medicines and sun exposure, an examination of what the skin does under pressure and under raking light, and sometimes a decision about whether a lesion needs an explanation rather than a lightening plan. Reading this site cannot substitute for that, and a routine chosen from a website alone is a routine chosen without a diagnosis.