The Viral Tretinoin + Azelaic Acid Trend—Adapted for Dry, Sensitive, Aging Skin

The combination makes sense. But for skin that has become drier, more sensitive, or less resilient, it may be missing two important pieces: controlled exfoliation and barrier support.

Tretinoin + azelaic acid has become one of the most talked-about combinations in skincare, and unlike many viral trends, there is substantial dermatologic science behind both ingredients. Tretinoin is one of the most studied topical treatments for photoaging. It influences cell turnover, pigmentation, and collagen-related pathways. Azelaic acid has anti-inflammatory and pigment-modulating activity and is widely used for acne, rosacea, and hyperpigmentation.

Together, they can address a surprisingly broad range of concerns, including breakouts, pigmentation, uneven tone, texture, fine lines, and signs of sun damage. But there is an important question that doesn’t get discussed nearly as much: what happens when the skin you’re treating is also becoming drier, more sensitive, and less resilient? For women entering their 40s, 50s, and beyond, that matters.

1. Who is the tretinoin + azelaic acid combination for?

Tretinoin and azelaic acid are commonly associated with acne, but their usefulness extends well beyond breakouts. Tretinoin is one of dermatology’s most established treatments for photoaging, helping address fine lines, rough texture, uneven pigmentation, and other visible effects of cumulative sun exposure. Azelaic acid complements it by targeting uneven tone, pigmentation, redness, and inflammation.

For aging skin, the appeal is therefore broader than acne. The combination addresses several changes that often become increasingly visible in midlife, including pigmentation, uneven tone, rougher texture, fine lines, and accumulated photodamage.

• For acne, tretinoin helps normalize follicular cell turnover and prevent clogged pores, while azelaic acid can help with acne, inflammation, redness, and the post-inflammatory pigmentation left behind.

• For aging/photoaging, tretinoin is the stronger centerpiece. It has extensive evidence for improving fine wrinkles, mottled pigmentation, roughness, and other signs of photodamage. Azelaic acid complements it primarily through pigmentation, uneven tone, and anti-inflammatory pathways. It is not really a major collagen or wrinkle treatment on its own.

But there is a catch. The skin experiencing these changes may also be becoming drier, more sensitive, and less resilient, particularly during perimenopause and menopause. That means the actives may still make sense, but the routine around them needs to evolve.

2. Retinoids work, but more isn’t necessarily better

Retinoids are powerful because they are biologically active. They interact with retinoid receptors and influence gene expression involved in epidermal differentiation, pigmentation, and collagen-related processes. But that activity can also come with a familiar adjustment period that includes dryness, peeling, redness, burning, and irritation.

When retinoids are used too aggressively, they can disrupt the stratum corneum and activate genes and signaling pathways associated with inflammation. That becomes especially relevant when skin is already struggling to retain moisture. You can end up repeatedly treating the skin, irritating it, drying it out, compensating with more moisturizer, and then beginning the cycle again. For dry, sensitive, aging skin, we think treatment needs to be balanced with barrier support and recovery.

3. The routine may also be missing controlled exfoliation

Retinoids and exfoliating acids are often discussed as though they do exactly the same thing, but they work differently. Retinoids influence cellular behavior through retinoid receptors, while alpha-hydroxy acids work more directly at the skin’s surface, helping loosen cohesion between cells within the stratum corneum and supporting exfoliation.

Glycolic acid is one of the best-known examples and has clinical evidence supporting improvements in aspects of photodamaged skin, including roughness and uneven pigmentation. This is why you sometimes see tretinoin, azelaic acid, and glycolic acid used within dermatologic treatment approaches.

For dry, sensitive skin, however, that does not mean all three need to be layered together, nor does it mean glycolic acid is the only option. Mandelic and lactic acids can provide a separate surface-renewal pathway, and mandelic acid’s larger molecular size makes it an interesting choice when designing exfoliation for skin where tolerability is a priority.

The important concept is not simply to add another acid. It is to give exfoliation its own place in the routine, with retinoid treatment on one evening, exfoliation on another, and recovery periods when neither is used.

4. The part that matters most for dry, aging skin: the barrier

This is where we would adapt the viral routine most significantly. Aging skin is not simply skin with wrinkles. The skin’s ability to hold onto water and maintain its protective barrier can change with age and hormonal shifts.

The outermost layer of the skin, the stratum corneum, is supported by a lipid matrix composed largely of ceramides, cholesterol, and fatty acids. These lipids help prevent excessive water from escaping. When that structure is compromised, transepidermal water loss can increase.

This helps explain an experience many women recognize. You apply moisturizer and your skin feels wonderful, but a few hours later it feels dry again. The answer is not necessarily another layer of water. Skin also needs the structures that help it retain that water. When retinoids and exfoliating acids are part of the routine, supporting hydration and the barrier becomes even more important.

5. The Steinder Weisen approach

When we looked at the tretinoin + azelaic acid approach through the lens of dry, sensitive, hormonally changing, and aging skin, we did not want to simply reproduce the viral routine. We wanted to adapt its logic around four distinct functions: azelaic acid and antioxidant support, retinoid renewal, controlled exfoliation, and hydration and barrier support.

ROWANE™

Azelaic Acid + Antioxidant Defense

ROWANE™ combines azelaic acid with 8.88% triple vitamin C, alongside niacinamide, ferulic acid, Kakadu plum, tocotrienols, and barrier-supporting ingredients. Used during the day, it provides the azelaic acid pathway alongside antioxidant support for uneven-looking tone, pigmentation, and environmental oxidative stress.

RÉAU™

Retinoid Renewal

RÉAU™ combines retinyl linoleate with bakuchiol, CoQ10, and omega-rich emollients. RÉAU™ is not tretinoin. Instead, it provides the retinoid component of our approach within a formula designed specifically around dry, sensitive, aging skin.

LISSE™

Controlled Acid Exfoliation

Rather than relying on the retinoid to do everything, LISSE™ provides a separate exfoliation pathway. It combines 9.52% mandelic + lactic acids with 3.40% N-acetyl glucosamine and more than 5% panthenol to support surface renewal, texture, and uneven-looking tone. LISSE™ and RÉAU™ are used on separate evenings rather than layered together.

BUFFÈRE™

Hydration + Barrier Support

BUFFÈRE™ provides the part of the viral routine that we think deserves far more attention. It is designed to provide intensive hydration and barrier support around active treatment. For dry, sensitive, or reactive skin, it can be applied before RÉAU™ or LISSE™ as a hydrating, barrier-supportive buffer. Tolerating your actives matters just as much as choosing them.

6. Instead of layering, create a rhythm

These four formulas are not designed to be piled onto the skin simultaneously. They are distributed across the week so that active treatment is balanced with hydration and recovery.

In the morning, use BUFFÈRE™ as needed, followed by ROWANE™ and SPF 50. This places azelaic acid and antioxidant support during the day while maintaining hydration and daily UV protection.

On a retinoid evening, use BUFFÈRE™ followed by RÉAU™. For dry or sensitive skin, applying BUFFÈRE™ first provides hydration and buffering before retinoid treatment.

On an exfoliation evening, use BUFFÈRE™ followed by LISSE™. LISSE™ occupies its own treatment evening rather than being layered with RÉAU™.

On recovery evenings, the focus shifts back to BUFFÈRE™ and barrier support, without a retinoid or exfoliating acid. Depending on how dry or sensitive your skin is, these recovery periods can be just as important as the treatment nights themselves.

The bigger idea

The viral tretinoin + azelaic acid combination makes sense, but dry, sensitive, aging skin changes the equation. This skin may simultaneously be experiencing declining hydration, changes in barrier lipids, accumulated UV damage, collagen loss, and reduced resilience, while being asked to tolerate increasingly sophisticated active routines.

Our approach is not simply to add more. It is to distribute treatment across different pathways while deliberately making room for recovery. Azelaic acid and antioxidant support are used during the day, retinoid renewal and controlled exfoliation occupy separate treatment evenings, and hydration and barrier support are incorporated throughout.

Treat. Replenish. Recover. Repeat. For skin that has entered a new era, how you use your actives may matter as much as which actives you choose.