Hyper pigmentation in your case looks more like post inflammatory hyper pigmentation associated due to sun exposure. As you are using retinoids and AHA based creams which increases sensitivity to sun, this is typical case of post inflammatory hyper pigmentation following application of AHA based creams
Next Steps
AVOID SUN EXPOSURE AND APPLY SUNSCREEN even AT HOME because even indoor sunlight can damage your skin and with these creams, its even more harmful
Health Tips
- Use a sunscreen with good SPF
- chemical peels and laser treatment might work
Online consultation would guide you better
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