| Azelaic Acid | hydroquinone | |
|---|---|---|
| Type | Key active | Key active |
| What it is | Anti-inflammatory / keratolytic active | Skin-lightening agent |
| Flags | — | Pregnancy caution |
Azelaic acid is a naturally occurring dicarboxylic acid used topically to treat acne and rosacea, working through antibacterial, anti-inflammatory, and comedolytic actions. It also inhibits tyrosinase, helping reduce hyperpigmentation.
Hydroquinone is a topical depigmenting agent that inhibits tyrosinase, reducing melanin production. It is used to treat hyperpigmentation conditions such as melasma, post-inflammatory hyperpigmentation, and dark spots.
General educational information for Indian skin, compiled from published dermatology literature and structured ingredient data. Not medical advice or a diagnosis.