Yes — you can use Aziderm (azelaic acid 10% w/w) and Adapnil (adapalene 0.1%) on the same day, but separate their application times and introduce them slowly to reduce irritation.

💊 How to use them together

• Best approach: use Aziderm (azelaic acid) in the morning after cleansing and Adapnil (adapalene) at night on dry skin.
• Alternative: if sensitive, alternate nights for adapalene and use azelaic acid each morning.
• Always apply a broad-spectrum sunscreen (SPF (sun protection factor) 30+ ) each morning.

🏥 Practical steps to reduce irritation

• Start adapalene every 2–3 nights for 2–4 weeks, then increase to nightly as tolerated.
• Use a gentle, non-foaming cleanser and a non-comedogenic moisturizer; apply moisturizer if skin becomes dry (can be used after adapalene to buffer).
• Avoid other strong topical irritants (benzoyl peroxide, glycolic/salicylic acids) at the same time unless your doctor advises.

⚠️ Warning signs

• Stop both products and see a doctor if you get severe redness, swelling, blistering, intense burning, or signs of allergic reaction.
• Stop if widespread painful peeling or infection develops.

🩺 When to see a doctor

• See a dermatologist if irritation persists despite skipping applications, if acne worsens, or if pregnant/breastfeeding concerns exist. A dermatologist can tailor timing/frequencies or suggest alternatives.

🩺 Follow-up

• Are you currently using either product now, do you have very sensitive/eczema-prone skin, and are you pregnant or breastfeeding?