Heat Rash

Stuart Millar Updated by Stuart Millar

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Stinging can occur when first applying SmartLotion®. For instructions on how to reduce the stinging, please click here.


Blisters or red lumps that can be itchy or have a prickly feeling. Caused by blocked sweat ducts and trapped sweat beneath the skin.


Dr. Harlan typically treats his adult patients for heat rash by having them apply SmartLotion® 2-3x per day for up to 2 weeks.


To prevent heat rash from returning, Dr. Harlan instructs his adult patients to apply SmartLotion® 1x per day, or less as needed.

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