Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/13/2025

Hydroquinone 4% Cream Safety and Efficacy

Adverse Events

  • The British Journal of Dermatology reports that common adverse events of hydroquinone 4% cream include contact dermatitis and ochronosis, with prolonged use increasing the risk of the latter 1, 2
  • The use of hydroquinone has been associated with theoretical concerns about carcinogenesis, although this remains a topic of debate 1, 2

Treatment Optimization

  • Combination therapy with chemical peels, such as glycolic acid 20-70% or salicylic acid 20-30%, may be considered for resistant cases of hyperpigmentation, as suggested by Praxis Medical Insights 3

REFERENCES

3

Treatment Options for Post-Inflammatory Hyperpigmentation (PIH) [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025