Post-summer skin: How to reduce blemishes and rebalance excess sebum

That sun-kissed glow you admire at the end of summer is, in reality, a sign that your skin has adapted. Rather than indicating healthy skin, a tan is the skin's natural defense mechanism against UV-induced damage.

Throughout the summer, blemishes often appear to fade under the combined effects of sunshine and time spent outdoors. This improvement, however, is only temporary. As your tan gradually fades and your skin returns to its normal rhythm, imperfections frequently reappear-sometimes more visibly than before. Known as the post-summer rebound effect, this biological and predictable phenomenon can affect every skin type.

Understanding this mechanism is the first step toward restoring lasting skin balance. At CODAGE, our formulations are built upon an in-depth understanding of skin biology, allowing us to address imbalances at their source. Here's what happens to the skin after summer - and the active ingredients to incorporate into your routine for a clearer, more balanced complexion.

What Summer Has Really Done to Your Skin

Heat, UV rays, perspiration, sunscreen filters, salt, chlorine... for weeks, the skin is exposed to a succession of environmental stressors that disrupt its natural balance.

As temperatures rise, sebaceous gland activity increases, leading to higher sebum production. Combined with sunscreen residues, pollution particles, and impurities accumulated throughout the day, excess sebum can contribute to clogged pores.

At the same time, UV exposure triggers the skin's natural defense mechanism: the epidermis thickens to help protect against sun-induced damage. This process, known as reactive hyperkeratosis, slows the shedding of dead skin cells and can hinder the natural flow of sebum.

The result? As sun exposure decreases and the skin gradually returns to its normal renewal cycle, these imbalances become more visible. Blackheads, microcysts, localized blemishes, and post-blemish marks begin to appear. These are clear signs that the skin needs targeted care to restore its long-term balance.

The CODAGE Solution: Nutri-Elements™ [Ac] and [Ma]

At CODAGE, every skin concern is addressed through a precise approach based on our Nutri-Elements™ - targeted complexes of active ingredients, carefully selected for their complementary actions and their ability to work in synergy at the heart of the skin's biological mechanisms.

To address the imperfections that often emerge after summer, two Nutri-Elements™ play a central role.

Nutri-Element™ [Ac]: Blemish Control

Nutri-Element™ [Ac] targets the key biological mechanisms involved in preventing and correcting blemishes. Its formula combines three complementary active ingredients.

• White Willow Bark Extract: Used for centuries for its soothing and purifying properties, White Willow Bark Extract is a natural source of salicin. It helps calm visible irritation while promoting skin renewal to reduce the appearance of blemishes.
• Mastic Resin: Sourced from the Mediterranean mastic tree cultivated on the Greek island of Chios, Mastic Resin helps visibly refine the appearance of pores and reduce imperfections. It also helps minimize blackheads, microcysts, and excess sebum.
• Grape Flower Stem Cells: Help reinforce the skin's natural defenses, visibly reduce redness, and promote a more even-looking complexion.

Nutri-Element™ [Ma]: Mattifying

Nutri-Element™ [Ma] targets excess sebum at its source by helping regulate oil production and minimize unwanted shine. Its combination of active ingredients helps visibly refine the appearance of pores while delivering a long-lasting mattifying effect, without disrupting the skin's natural moisture balance.

• Pseudoalteromonas Ferment Extract: Derived from marine biotechnology, this active ingredient helps regulate sebum production at its source and prevents excess oil from accumulating within the pores.
• Peony Stem Cells: Inspired by traditional Chinese medicine, these stem cells help inhibit the enzymatic activity involved in sebum production, reduce visible shine, and support a well-hydrated skin barrier.
• Zinc: Naturally present in the body, this essential trace element complements the formula with its sebum-regulating, antioxidant, and purifying properties.

These two Nutri-Elements™ are combined in the Serum N°02 - Anti-Shine & Imperfections, CODAGE's targeted treatment for skin prone to excess shine, visible pores, and blemishes. It is the ideal serum to incorporate into your routine at the end of summer, helping restore your skin's natural balance as the seasons change.

The Complete Post-Summer Routine to Rebalance the Skin

Prepare: Purify and Renew

The first step is to free the skin from the impurities accumulated throughout the summer. Morning and evening, the Cleansing Gel removes excess sebum, pollution particles, and other impurities with its dermo-purifying complex combining salicylic acid-rich willow bark extract and zinc. It cleanses thoroughly without stripping the skin while helping rebalance the skin microbiome.

Once or twice a week, complement your cleansing routine with the Micro-Peeling Mask. Enriched with AHAs and BHAs, it gently stimulates cell renewal, refines skin texture, minimizes the appearance of pores, and helps reduce the first visible signs of post-summer pigmentation irregularities.

Complete this purification step every day with Perfecting Solution 02. Applied with a cotton pad after cleansing, it combines salicylic acid and fruit acids to remove dead skin cells, unclog pores, and prepare the skin to fully benefit from the active ingredients in the serums that follow.

Treat: Target Skin Imbalances

This is where the CODAGE approach truly comes into its own. Serum N°02 - Anti-Shine & Imperfections, formulated with Nutri-Elements™ [Ac] and [Ma], helps reduce active blemishes, regulate excess sebum, and visibly refine pores. It can be applied to the entire face or used as a targeted treatment on areas of concern.

If summer has left behind dark spots or an uneven complexion, Serum N°04 - Anti-Spots & Lightener helps restore skin clarity by targeting the biological mechanisms responsible for pigmentation. Its synergistic blend of antioxidant, brightening, and dark spot-correcting active ingredients gradually evens skin tone while reducing the appearance of sun-induced discoloration.

To maintain these results and help prevent the formation of new pigmentation irregularities, daily sun protection remains essential. Serum N°09 - Sun Shield SPF 50+ should be applied every morning to the face and neck after your serums and before your Day Cream or Day Fluid. Fragrance-free and with an invisible finish, it provides broad-spectrum UVA and UVB protection throughout the day, all year round.

For skin that has been weakened or sensitized by summer aggressions, Skin Recovery Serum provides the ideal solution. It helps soothe feelings of discomfort, strengthen the skin barrier, and restore healthier, more resilient skin.

Protect: Lock In and Defend

In the morning, Day Fluid hydrates and protects the skin without leaving excess shine. Its lightweight texture is particularly well suited to combination and oily skin, or during seasonal transitions when the skin needs hydration without feeling heavy.

Body Care Routine: Prepare, Treat, Protect

As summer comes to an end, the body also deserves targeted care to restore softness and radiance.

Once or twice a week in the shower, the Exfoliating Balm promotes skin renewal through the combined action of brown sugar crystals and finely milled rice grain particles. Enriched with shea butter and macadamia oil, it gently exfoliates while preserving skin comfort.

After exfoliation, Intense Moisturizing Serum-Milk restores the skin's hydrolipidic film and replenishes moisture deep within the skin.

Finish with The Oil, applied to dry or damp skin to intensely nourish and soothe. This precious blend of eight botanical oils delivers a complete treatment ritual for the face, body, hair, and hands.

A Tailored Solution for Post-Summer Skin

The post-summer rebound effect is not inevitable. It is simply the skin's natural response to the changes triggered by weeks of sun exposure.

Helping the skin regain its balance requires a targeted approach: regulating excess sebum, unclogging pores, and preserving skin comfort.

This is the philosophy behind Serum N°02 - Anti-Shine & Imperfections and its Nutri-Elements™ [Ac] and [Ma]. Carefully selected active ingredients work in synergy to address the skin's specific needs, helping restore a clearer, more even-looking, and naturally balanced complexion over time.

Are post-summer blemishes limited to oily skin?

No. The post-summer rebound effect can affect every skin type. As a natural response to UV exposure, the epidermis temporarily thickens, slowing the natural shedding of dead skin cells and encouraging sebum to accumulate within the pores. As the skin gradually returns to its normal renewal cycle, these imbalances become more visible.

Is Serum N°02 - Anti-Shine & Imperfections Control suitable for sensitive skin?

Yes. Its formula combines targeted active ingredients with skin-comforting ingredients such as Medium Molecular Weight Hyaluronic Acid and Centella Asiatica Extract. For highly reactive skin, it can also be applied as a targeted treatment to specific areas.

Should you apply SPF after using dark spot treatments?

Yes - daily sun protection is essential. Brightening and exfoliating active ingredients can increase the skin's sensitivity to UV rays, making existing pigmentation more likely to worsen if left unprotected. Serum N°09 - Sun Shield SPF 50+ should be applied every morning after your treatment serums to help protect the skin and maximize the results of your skincare routine.

When should exfoliating products be reintroduced after summer?

As soon as prolonged, intense sun exposure decreases, exfoliating products can gradually be reintroduced into your routine. Perfecting Solution 02 and the Micro-Peeling Mask are best incorporated into your evening ritual to support skin renewal and reveal a smoother, more even-looking complexion.

Can Serum N°02 - Anti-Shine & Imperfections be combined with Serum N°04 - Anti-Spots & Lightener?

Absolutely. These two serums are highly complementary and address different skin concerns. Serum N°02 - Anti-Shine & Imperfections helps regulate excess sebum and reduce blemishes, while Serum N°04 - Anti-Spots & Lightener targets pigmentation and the residual marks left behind after summer.

In keeping with the personalized philosophy of CODAGE, our serums can be combined in three different ways:

• Layering: Apply the serums one after another over the entire face, allowing each formula to absorb before applying the next.
• Mixing: Blend a few drops of each serum together in the palm of your hand before application.
• Zoning: Apply each serum only where it is needed - for example, Serum N°02 - Anti-Shine & Imperfections on the T-zone and Serum N°04 - Anti-Spots & Lightener directly onto dark spots.

Each application method allows you to personalize your skincare routine and tailor your treatment to your skin's specific needs.