Tropical Acne
Because of the common findings of acne occurring in people adapting to tropical climates, it is thought that humidity, causing sweatiness, and over exposure to heat and sun may be a cause of acne.
People suffering from acne will often try to tan in order to hide the visual appearance of the red bumps, but in truth it usually aggravates the condition.
If you have started getting acne since you moved to a tropical environment you may consider staying out of the sun or using an oil free sunscreen. (more on cosmetics and acne)