From my personal experience, incorporating azelaic acid and tretinoin into my skincare routine has truly been a game-changer for achieving the coveted glass skin look. Azelaic acid is remarkably gentle yet effective in addressing stubborn issues like hyperpigmentation, melasma, and redness from rosacea or perioral dermatitis. It gently exfoliates the skin while unclogging pores, leading to a visibly brighter and more even complexion. Tretinoin, often touted as the gold standard in anti-aging and acne treatments, complements azelaic acid by stimulating collagen production and elastin, which greatly improve skin texture and firmness. Using just a pea-sized amount once or twice daily after cleansing has helped fade dark spots, minimize pores, and keep breakouts under control without excessive irritation when paired carefully with azelaic acid. A key insight I've gained is the importance of supporting these actives with a strong barrier repair regimen and limiting exfoliation to one or two times per week to prevent over-exfoliation. Additionally, pairing this combo with a tinted sunscreen or peptide moisturizer enhances protection and hydration, sealing in all the benefits. If you're serious about achieving glass skin this year, starting with azelaic acid and tretinoin can lay a powerful foundation. Remember to introduce these products gradually, monitor your skin’s response, and prioritize barrier care. This dynamic duo truly offers a path to glowing, balanced, and youthful skin when used mindfully.