Adapalene/Benzoyl Peroxide

A unique Prescription-to-OTC switch in acne care, this approval expands access to a dermatologist-trusted, prescription-strength treatment for millions of acne sufferers ages 12 years and older Backed by more than 15 years of real-world dermatologist use and a robust clinical research program, this milestone demonstrates the depth of science behind the Differin® and Epiduo® heritage Adapalene plus benzoyl peroxide (0.1/2.5%) was the first FDA-approved, stable, fixed- dose prescription acne treatment to combine of benzoyl peroxide with a retinoid, and is now available over-the-counter The formulation is engineered to target multiple causes of acne more effectively than either of its individual active ingredients alone Zug, Switzerland – May 22, 2026 – Galderma (SIX: GALD), the pure-play dermatology category leader, today announced that the United States (U.S.) Food and Drug Administration (FDA) has approved Differin® Epiduo® Acne Gel (Adapalene 0.1% and Benzoyl Peroxide 2.5% Acne Treatment) for over-the-counter (OTC) use in ages 12 years and older, marking a significant Prescription-to-OTC transition in acne care. This milestone represents yet another example of Galderma’s unique Integrated Dermatology strategy, demonstrating how proven innovations from its Therapeutic Dermatology portfolio can further strengthen its Dermatological Skincare offerings. The Prescription‑to‑OTC transition highlights Galderma’s scale and expertise in successfully commercializing dermatology innovations across the full spectrum of acne care. With the approval of Differin Epiduo OTC, Galderma is bringing its proven acne science to a broader population of acne sufferers through wider access to a dermatologist-recommended, prescription-strength treatment, while further strengthening its global leadership in acne care. Differin Epiduo is a topical acne treatment that combines adapalene, a third-generation retinoid originally discovered and developed by Galderma to address the stability and tolerability challenges of earlier retinoids, with benzoyl peroxide (0.1/2.5%). This adapalene molecule reflects Galderma’s long-standing leadership in retinoid science, delivering an innovation-led approach that goes beyond traditional OTC acne actives. Together, these two dermatologist-trusted ingredients address key biological drivers of acne – clearing clogged pores, killing acne-causing bacteria, and reducing acne inflammation – to help clear acne, prevent future breakouts and improve skin tone, texture, and overall appearance.1,2 The formulation is further powered by its Simulgel™ Gel Base, which stabilizes and evenly distributes both active ingredients while maintaining benzoyl peroxide’s efficacy and improving overall tolerability. This enables a simple, one-pump, once-daily regimen – a level of ease that is critical to building consistent routines and achieving clearer skin over time. “This approval marks an important milestone in acne care and reflects Galderma’s longstanding leadership in acne and retinoid science. Differin Epiduo pairs two complementary, evidence‑based actives: adapalene, a highly stable and well‑tolerated retinoid developed by Galderma, and benzoyl peroxide, a proven antimicrobial agent. This retinoid-benzoyl peroxide combination aligns with dermatology guidelines, which strongly recommend using both together as a first‑line, multimodal approach to acne treatment. Bringing this scientifically grounded combination to the OTC setting allows us to extend that legacy to patients across the U.S. while preserving the clinical rigor that underpins its effectiveness.” BILL ANDRIOPOULOS, PH.D. HEAD OF GLOBAL MEDICAL AFFAIRS GALDERMA Proven efficacy across multiple randomized, controlled Phase 3 studies, with adapalene/benzoyl peroxide gel consistently outperforming adapalene alone, benzoyl peroxide alone, and vehicle gel across inflammatory, non-inflammatory, and total acne lesions, as well as Investigator Global Assessment (IGA) success rates (“clear” or “almost clear”).3-5 Clinically meaningful improvement in lesion counts seen as early as Week 1, with antimicrobial activity beginning on Day 1 and up to 70.3% reduction in inflammatory acne lesions at Week 12.3 Sustained efficacy with long‑term use, maintaining ~65% total lesion reduction in a single arm study through 12 months, which supports once‑daily, ongoing acne control.6 Proven efficacy across diverse patient populations, with consistent results and favorable tolerability across skin tones. “This milestone reflects a meaningful advancement for patients, as it expands access to a clinically proven, dual-active acne solution without the need for a prescription. In my practice, the combination of easy access and a simple, once-daily application can help patients use treatment more consistently in their treatment journey for the best possible outcomes.” HEATHER WOOLERY-LLOYD, MD BOARD-CERTIFIED DERMATOLOGIST UNITED STATES First approved as a prescription treatment, Epiduo® (Adapalene 0.1% and Benzoyl Peroxide 2.5%) Gel has been trusted by dermatologists for more than 15 years, with millions of prescriptions written worldwide. Its global clinical legacy includes more than ten Galderma studies involving over 3,200 patients, along with extensive third-party studies, across a wide range of ages, skin tones and acne severity. With this Prescription-to-OTC switch, Galderma continues to play a defining role in shaping modern acne care, leveraging its own proprietary science to advance dermatology, and expanding access to effective treatments. Differin Epiduo will be available over-the-counter at most major retailers, including Walmart, Ulta, Target and Amazon, beginning in the summer of 2026. With a commitment to providing effective solutions across consumers’ acne journey, the Differin portfolio also includes cleansers, treatments, and moisturizers to support and provide wholistic solutions. For more information on Differin Epiduo and other Differin products, please visit www.differin.com and join the Differin community on Instagram, Facebook and YouTube to stay up to date on the latest innovations. * Outside of the U.S. Epiduo® remains a prescription only product. Galderma (SIX: GALD) is the pure-play dermatology category leader, present in approximately 90 countries. We deliver an innovative, science-based portfolio of premium flagship brands and services that span the full spectrum of the fast-growing dermatology market through Injectable Aesthetics, Dermatological Skincare and Therapeutic Dermatology. Since our foundation in 1981, we have dedicated our focus and passion to the human body’s largest organ—the skin—meeting individual consumer and patient needs with superior outcomes in partnership with healthcare professionals. Because we understand that the skin we are in shapes our lives, we are advancing dermatology for every skin story. For more information: www.galderma.com. For further information: Christian Marcoux, M.Sc. Chief Communications Officer christian.marcoux@galderma.com +41 76 315 26 50 Emil Ivanov Head of Strategy, Investor Relations, and ESG emil.ivanov@galderma.com +41 21 642 78 12 Céline Buguet Franchises and R&D Communications Director celine.buguet@galderma.com +41 76 249 90 87 Jessica Cohen Investor Relations and Strategy Director jessica.cohen@galderma.com +41 21 642 76 43 Viviana Wiewall Head of U.S. Communications viviana.wiewall@galderma.com +1 786 451 7740 References: Follow us on Social Media for current news and patients stories