Pigment pathways, hormones and UV triggers
SESH ACADEMY · INTERMEDIATE SKINCARE
Pigment pathways, hormones and UV triggers
Explain recurring pigment triggers instead of treating only color.
Melanocytes produce pigment and transfer it to surrounding cells. The diagram explains a mechanism; colour alone does not diagnose a dark spot.
Open full-size image ↗Melanin is a regulated pathway
Melanocytes make melanin through pathways involving tyrosinase and transfer pigment-containing melanosomes to surrounding cells. UV exposure, inflammation and some hormonal signals can influence production and distribution. Not every brightening formula acts at the same step.
Recurrence has causes
If acne remains inflammatory, new PIH can appear even while earlier marks fade. Melasma can recur with UV, visible light and other triggers. A plan that reduces ongoing exposure and inflammation may matter more than an unrealistic promise of permanent removal.
Define a realistic outcome
Instead of promising an arbitrary number of lighter shades, track the area and prominence of existing marks and whether new ones appear. Results vary with pigment distribution, underlying condition and treatment. Some disorders need prescription or procedural care.
Locate ultraviolet and visible light within the spectrum. This is not a sunscreen protection test; protection must be assessed from product data and testing.
Open full-size image ↗Apply this to a realistic case
Case: marks fade but new ones appear
One mark is fading, but new inflammatory breakouts leave additional marks; the learner calls the brightening serum a failure.
Reasoned next step: Address ongoing inflammation and separate prevention from fading.
The pitfall to avoid
Assuming fading existing marks automatically prevents new pigmentation.
Related Ingredient Dictionary entries
Related SESH product examples
These illustrate product roles and ingredient lists, not proof that the products clinically treat every condition described.
Evidence and further reading
Educational information for understanding decisions. It does not diagnose or replace medical advice.
