Combination-OilyGel Textures OnlyNo OcclusivesPIH Risk
When ambient humidity exceeds 70% for sustained periods, sebaceous glands lose their feedback loop. Oil production accelerates, pores stay enlarged, and most emollient-based products seal in heat rather than moisturising.
The Mechanism
Why Creams Fail Here
Occlusive ingredients -- shea butter, mineral oil, lanolin -- form a seal that works in dry climates. In South India's humidity, that seal traps heat against already-stressed skin, accelerating congestion and triggering PIH. Switch to water-gel textures with hyaluronic acid as the humectant.
