By LP Skin Team 
Azelaic acid has quietly risen through the ranks to become a trusted favorite in the modern skincare routine. While it may not receive the fanfare of trendier ingredients like retinol or vitamin C, its reputation is steadily growing—thanks to its remarkable ability to address a variety of skin concerns such as acne, rosacea, uneven skin tone, and post-inflammatory hyperpigmentation.
As its popularity continues to grow, one question often arises: Does azelaic acid increase your skin’s sensitivity to the sun? For anyone considering incorporating it into their daytime regimen, this is a fair and important consideration.
What Makes Azelaic Acid So Unique
Originally derived from grains like wheat, rye, and barley, azelaic acid is a naturally occurring dicarboxylic acid. In skincare formulations, it is synthesized in a lab to ensure both stability and consistency. Its gentle nature makes it suitable for nearly every skin type, including those who are sensitive, acne-prone, or struggling with redness.
Unlike many popular acids and exfoliants, azelaic acid doesn’t rely on aggressive action to improve the skin. Instead, it works more subtly—reducing inflammation, clearing pores, and gently encouraging cell turnover. It also plays a role in fading pigmentation by interfering with the enzyme responsible for melanin production, making it a particularly good choice for those looking to brighten dark spots without irritation.
Its anti-bacterial and anti-inflammatory effects make it especially popular among dermatologists, who frequently prescribe it for acne and rosacea. And unlike stronger actives that require a cautious introduction and limited use, azelaic acid is often well tolerated even with daily application.
Does Azelaic Acid Increase Sun Sensitivity?
It does not make the skin more vulnerable to sunburn or sun damage.
One of the biggest concerns people have when starting a new active ingredient is whether it will increase photosensitivity—that is, the skin’s vulnerability to UV damage. This is a legitimate concern, especially with ingredients like retinoids, glycolic acid, and salicylic acid, all of which can thin the outer layer of the skin or impair the skin barrier, making it more susceptible to burning.
Azelaic acid, however, does not fall into this category. Clinical studies and expert reviews consistently confirm that it does not make the skin more sensitive to sunlight. This makes it one of the few treatments for pigmentation and acne that can be used safely during the day.
That said, there is still a compelling reason to pair it with sun protection. While azelaic acid doesn’t cause photosensitivity, many of the conditions it treats—such as melasma, dark spots, and rosacea—are easily worsened by sun exposure. Without proper SPF, the progress you make with your skincare can be easily undone by a few hours outdoors.
How to Use Azelaic Acid Safely in Your Skincare Routine
Azelaic acid can be used both in the morning and evening. If you choose to use it during the day, here’s how to integrate it properly:
Suggested Morning Routine:
- Cleanser – Choose a gentle cleanser to avoid stripping the skin.
- Toner (optional) – Use a hydrating toner if desired.
- Azelaic Acid – Apply a small amount (a pea-sized quantity is typically sufficient) to clean, dry skin.
- Moisturizer – Follow with a lightweight, nourishing moisturizer to lock in hydration.
- Broad-Spectrum Sunscreen (SPF 30 or higher) – The most important step. Reapply throughout the day if exposed to direct sunlight.
Evening Use:
Azelaic acid can also be paired with other ingredients in the evening, such as niacinamide, hyaluronic acid, or even gentle exfoliants. Avoid combining it with strong actives (like high-percentage AHAs or retinoids) until you’re sure your skin tolerates the combination.
A Gentle, Effective Option for Everyday Use
Azelaic acid’s appeal lies in its quiet reliability. It’s gentle, effective, and remarkably versatile. Whether you’re targeting breakouts, calming redness, or brightening stubborn spots, it offers visible results without the irritation that so often accompanies active ingredients.
And unlike many other treatments, it won’t demand you hide from the sun. Used alongside daily sun protection, it becomes a powerful ally in maintaining clear, balanced, and resilient skin. For anyone seeking a steady, well-tolerated solution to common skin issues—especially one that can be used year-round, day or night—azelaic acid is a worthy addition to the skincare cabinet.