☀️ Soleil Kérastase in Milan: sun protection products for colored and lightened hair, protecting from sun, salt and chlorine

Summer is the time of year when hair suffers most, and often we only notice it in September. Sun, sea salt, swimming pool chlorine and wind work day after day on the cuticle and on the color: coming back from holiday with dull, dry hair and a faded color is one of the situations we see most often at Alexim Atelier Duomo in early autumn.

Yet it is a situation that can be avoided almost completely with the right routine. Hair, exactly like skin, needs dedicated sun protection: a product system designed to shield against UV rays, counter the dehydration caused by salt and chlorine, and keep the color intact even after weeks of exposure. This is exactly what the Soleil line by Kérastase does, one of the most solid hair sun care ranges in the professional market.

At Alexim Atelier Duomo, on Via Mazzini 16 in Milan, we offer Soleil as a retail line: you can purchase the products in the salon with a dedicated consultation, without needing to book a treatment. It is the ideal solution for those heading to the seaside, the mountains or a sunny holiday and who want to bring along a professional routine capable of protecting the technical work done on color or lightening.

In this article we tell you how the Soleil line works, which are the three products that make it up, how to use them before, during and after sun exposure, and we present the summer gift reserved for our clients: a Kérastase beach pouch with the purchase of 2 Soleil products, or a Kérastase beach bag with the purchase of 3 products. ☀️

🌞 Why hair suffers in summer, especially if it’s colored or lightened

In summer, hair is exposed to a combination of factors that work simultaneously against the cuticle and against the pigment. UV rays directly attack the hair fiber and oxidize the color pigments, exactly as happens on the skin: the technical name for the phenomenon is photodegradation and it translates into a visible loss of color intensity even after just a few days of intense exposure. The salt of the sea deposits salt crystals on the lengths, dehydrates the fiber and makes it rough to the touch. The chlorine in the pool, especially if concentrated, is even more aggressive: it penetrates the cuticle and can shift the color towards greenish tones, particularly on blonde and lightened hair.

Added to these factors are the wind, which mechanically lifts the cuticle scales and generates knots and frizz, and the dry air of certain destinations, which amplifies dehydration. The clients we follow at Alexim Atelier Duomo for technical color and lightening services are particularly exposed: a fresh color, a balayage or an Airtouch lightening are delicate works that required time and attention, and that deserve to be protected during the holidays exactly as one would protect a couture garment.

The point is that hair sun protection is not a cosmetic detail: it is an investment in the duration of the technical service. Without a dedicated routine, weeks of holiday can erode up to 30-40% of the color brilliance and softness achieved in the salon, and in September the client finds herself with hair that needs to be redone. With the Soleil line, on the other hand, the color stays vibrant, the cuticle stays sealed and the hair returns from the holidays in good health. ☀️

🌟 Soleil Kérastase: what it is and how the hair sun line works

Soleil is the Kérastase line dedicated entirely to hair sun protection, one of the brand’s historic ranges and one of the most recognized in the professional world. Its logic is precise: replicate on hair the same approach that facial cosmetics applies to skin, building a routine for before, during and after sun exposure, with products that work in a coordinated way.

The heart of the Soleil formula is a combination of UV filters, Babassu oil, vitamin E and coconut water, ingredients chosen for their synergistic properties. UV filters directly shield against solar rays, preventing the photodegradation of the color. Babassu oil, extracted from an Amazonian palm, is a lightweight oil that nourishes without weighing down and creates a protective barrier on the cuticle. Vitamin E is an antioxidant that counters the oxidative stress generated by UV rays. Coconut water maintains the hydration level of the fiber even after long hours in the sun.

The current range consists of three products that cover the entire summer routine: the after-sun shampoo for gentle cleansing after sea and pool, the iconic biphasic spray oil to use before and during exposure, and the after-sun mask for intensive repair. It is an essential but complete system, designed to be packed into a suitcase without compromise and to accompany the client throughout the entire season. ☀️

💧 Bain Après-Soleil: the nourishing after-sun shampoo

The Bain Après-Soleil is the starting point of the Soleil routine. It is a nourishing shampoo with a gel texture, formulated to deeply cleanse the hair after a day at the sea or pool, removing residues of salt, chlorine, sand and body sunscreens that inevitably deposit on the hair during summer. At the same time it restores to the fiber the hydration that sun and salt have removed.

The Bain Après-Soleil is gentle enough to be used daily during holidays, even after multiple baths in the same day, without aggressing the fiber or stressing the color. It is particularly indicated for those with colored or lightened hair, because its formula is designed not to fade the pigments during washing.

It is applied with a gentle circular massage on the scalp, followed by a pass along the lengths to distribute the product well, and it is rinsed with lukewarm water (never hot, especially in summer). The standard format is 250 ml, designed to accompany a two or three week holiday. ☀️

🌊 Huile Sirène: the iconic biphasic spray oil of the line

The Huile Sirène is the iconic product of the Soleil line, one of the most recognizable formulas in the entire Kérastase portfolio. It is a biphasic spray oil, recognizable by its double liquid phase that must be shaken before use: a water phase at the bottom and an oil phase at the top, which mix at the moment of dispensing to guarantee a lightweight and never greasy texture.

The formula contains Babassu oil, vitamin E and UV filters: this means that Huile Sirène works simultaneously as a sun protectant, as a texturizer for natural beach waves, and as a leave-in conditioner that disciplines the hair and makes it shiny. It is a multitasking product that on its own covers a good part of the day at the beach.

Huile Sirène is used before sun exposure on wet or dry hair, after the shower, before going out to the sea. It is also applied during the day, every time you come out of the water: a couple of sprays on the lengths after the bath and the hair returns soft, shiny, defined like beach waves. The signature scent, built on notes of jasmine and solar tuberose, is one of those summer fragrances that stay in the memory of clients.

It is the product we recommend to all clients leaving for the sea, even to those who do not want to build a complete routine: if you have to choose just one product from the Soleil line, choose Huile Sirène. The format is 150 ml, easy to fit in a beauty case and practical to use directly under the beach umbrella. ☀️

🌺 Masque Après-Soleil: the after-sun mask for intensive repair

The Masque Après-Soleil is the product of intensive repair, to be used at least once or twice a week during holidays and in the weeks immediately following the return. It has a cream-gel texture, rich but not weighing down, that distributes easily on the lengths and penetrates the cuticle in a few minutes.

Its action is twofold: on one hand it deeply nourishes the fiber, restoring the hydration that sun, salt and chlorine have removed during exposure; on the other it repairs the micro-damage of the cuticle, aligns the scales and prepares the hair to better receive subsequent applications of Huile Sirène. It is particularly indicated for those with colored or lightened hair, because it helps maintain the pigment and counter summer fading.

It is applied after the Bain Après-Soleil shampoo on towel-dried lengths (never on the roots), left on for 5-10 minutes, and rinsed thoroughly. For a more intensive application on days of strong exposure, it can be left on longer or used with a warm towel as a wrap. The format is 200 ml. ☀️

✨ The Soleil routine: before, during and after sun exposure

The three products of the Soleil line work in a coordinated way throughout the day and throughout the entire holiday. The advice we give our clients is to think of sun protection for hair as a ritual articulated in three moments, exactly as one does with body skincare.

• ☀️ Before exposure: after the morning shower, apply Huile Sirène on wet or dry lengths. Spray two or three times distributing the product well with your hands, avoiding the roots. The UV filters start working immediately, the Babassu oil seals the cuticle and vitamin E protects from solar rays for the following hours;
• ☀️ During the day: every time you come out of the water (sea or pool), gently pat the hair with the towel and apply a new pass of Huile Sirène. Two sprays are enough to refresh the protection, discipline the hair and create that soft beach waves effect typical of the product;
• ☀️ Evening, after the day in the sun: cleanse the hair with the Bain Après-Soleil to remove salt, chlorine and residues. Once or twice a week, after the shampoo, apply the Masque Après-Soleil for intensive repair. Finish with a veil of Huile Sirène on the wet lengths before natural air drying.

This routine, repeated every day for the entire duration of the holiday, keeps the hair healthy and protects the color significantly. Clients who follow it come back from holidays with soft, shiny hair and the color intact, ready to be simply refreshed in the salon with a maintenance treatment and not with a complete technical service. ☀️

🎁 Summer gift: complimentary Kérastase pouch or beach bag with Soleil products

To accompany the summer season, at Alexim Atelier Duomo we have reserved two exclusive gifts on the Soleil line for our clients. It is our way of valuing the choice to build a complete routine for the holidays and to bring along professional protection even outside the salon.

• 🎁 With the purchase of 2 Soleil products: complimentary Kérastase beach pouch, perfect for organizing your beauty products in your suitcase or under the beach umbrella;
• 🎁 With the purchase of 3 Soleil products (the complete Bain + Huile Sirène + Masque routine): complimentary Kérastase beach bag, the luxury complement for your holiday days at the sea or by the pool.

The gift is valid while supplies last and is reserved for purchases made in the salon. We recommend stopping by to pick up the products a few weeks before departure, so we can build together the routine most suited to your needs and to the type of holiday you have planned. ☀️

🌟 Soleil for colored, lightened, balayage and Airtouch hair

The Soleil line is particularly indicated for clients we follow at Alexim Atelier Duomo on technical color and lightening services. A fresh coloring done with the Color Couture method and Wella Professionals products is a work of precision, built tone on tone on the client: prolonged sun exposure without protection can fade the pigments asymmetrically, generating areas more discolored than others and compromising the uniformity of the result.

The same applies to clients who have just had a balayage, an Airtouch lightening or other lightening techniques. Lightened strands are by nature more porous and therefore more vulnerable: without a protective routine, the lifted cuticle absorbs salt and chlorine like a sponge, and in the pool can even shift towards greenish tones, especially on cooler blondes.

In these cases we always recommend the complete Soleil routine: Bain Après-Soleil as a daily shampoo, Masque Après-Soleil twice a week to nourish and protect the pigment, Huile Sirène as a UV shield during the day. For clients with balayage or Airtouch we also recommend bringing along the Bain Hydra-Glazing from the Gloss Absolu line for mid-week washes, in order to maintain the mirror-like shine even on holiday. Combining the two lines is a strategy that works very well and that we often build together with clients during the pre-departure consultation. ☀️

🕰️ Soleil Kérastase according to Alexim Atelier Duomo

At Alexim Atelier Duomo we have worked with Kérastase for many years and we know the entire brand portfolio in depth, including specialist seasonal lines such as Soleil. When a client asks us for advice for her holidays, we always start with a hair diagnosis and a few precise questions: where will she go on holiday, for how long, will she spend more time at the sea or in the pool, has she just had a recent technical service. Based on the answer we build the most suitable routine.

To those leaving for a short holiday we generally recommend just Huile Sirène, sufficient to cover a week at the sea with a good level of protection. To those leaving for two or three weeks we recommend the complete routine, because Bain and Masque become fundamental for maintaining color and cuticle. For clients with important technical services (light balayages, Airtouch, color removal) the complete routine is practically mandatory, and in that case we often integrate the consultation with a Gloss Absolu or nanoplasty treatment to do on return to restore shine and discipline.

Our approach is always consultative, not commercial: if the routine you already have is adequate we tell you so, while if it is worth integrating it with a specific product we explain why. Our reputation is based on client satisfaction over time and on the quality of service, not on the single purchase. Soleil is a line we propose because it really works and because we know that protecting color in summer is one of the smartest things a client can do for her hair. ☀️

⭐ Reviews

Reviews tell what is essential for us: listening, precision, elegance and consistency over time. At Alexim Atelier Duomo, every consultation, including retail, is designed to make the client feel followed, understood and valued, from the first minute to the final result. ☀️

📍 Where we are

❓ FAQ – Soleil Kérastase Milan

What is the Soleil line by Kérastase?
Soleil is the Kérastase line dedicated entirely to hair sun protection. It is designed to protect the hair from UV rays, salt, chlorine and wind during summer, and to keep the color intact during sun exposure. The current range consists of three products: Bain Après-Soleil (after-sun shampoo), Huile Sirène (biphasic spray oil with UV filters) and Masque Après-Soleil (nourishing after-sun mask).

Which Soleil line products are available at Alexim Atelier Duomo?
At Alexim Atelier Duomo, on Via Mazzini 16 in Milan, you can find the three products of the current Soleil Kérastase range: Bain Après-Soleil 250ml, Huile Sirène 150ml and Masque Après-Soleil 200ml. They are available as in-salon retail, even without booking a treatment.

Can I purchase Soleil products without booking a treatment?
Yes. Soleil is a pure retail line, and you can purchase the products in the salon even without booking a technical service. We still recommend a short complimentary diagnostic consultation before purchase, so we can point you to the products best suited to your hair type and to the kind of holiday you have planned.

How does the complimentary pouch and beach bag promotion work?
It is a summer gift reserved for Alexim clients. With the purchase of 2 Soleil products you receive a complimentary Kérastase beach pouch, perfect for the travel beauty case. With the purchase of 3 Soleil products (the complete Bain + Huile + Masque routine) you receive a complimentary Kérastase beach bag. The gift is valid while supplies last and is reserved for purchases made in the salon.

If I have to choose just one Soleil product, which do you recommend?
Huile Sirène. It is the iconic product of the line, a biphasic spray oil that on its own performs three functions: it protects from UV rays thanks to the built-in solar filters, it nourishes the fiber with Babassu oil and vitamin E, and it disciplines the hair creating a soft and luminous beach waves effect. It is used before exposure and during the day, every time you come out of the water. For a short holiday it is the essential product.

Is Soleil indicated for colored and lightened hair?
Yes, it is particularly indicated. Colored, lightened, balayage or Airtouch-treated hair is more sensitive to sun exposure: UV rays can fade pigments asymmetrically and chlorine can shift blondes towards greenish tones. The Soleil routine is designed precisely to protect color during summer, keep the cuticle sealed and reduce fading. It is an investment in the duration of the technical service done in the salon.

How do you use Huile Sirène?
Huile Sirène is a biphasic spray oil, so it should always be shaken well before use to mix the water phase and the oil phase. It is applied on wet or dry hair, spraying two or three times on the lengths, avoiding the roots, and distributing with the hands. It is used before sun exposure and during the day, every time you come out of the water. In the evening, after the Bain Après-Soleil shampoo, it can be applied on wet hair before natural air drying.

How long does a bottle of Huile Sirène last on holiday?
The standard format of Huile Sirène is 150 ml. With intensive use (multiple applications per day during a seaside holiday), one bottle typically covers from 2 to 4 weeks of holiday, depending on hair length and frequency of swims. For those with long hair or who leave for extended holidays, we recommend purchasing two bottles.

Can I use Soleil products all year round?
Soleil products are designed specifically for the summer season and for contexts of strong sun exposure (tropical holidays, sea, pool, high altitude mountain). Out of season we recommend returning to the standard daily routine (Gloss Absolu for shine, Nutritive for nourishment, or other lines based on your profile). Some clients also use Huile Sirène in spring for the first sunny days or in autumn holiday months in the tropics.

Is Soleil also good for the pool?
Yes, in fact it is particularly useful for those who frequent the pool, because chlorine is more aggressive than sea water and is one of the main causes of color fading and greenish tones on blondes. Huile Sirène applied before swimming creates a barrier that reduces chlorine absorption, and Bain Après-Soleil removes residues after the swim, protecting the cuticle.

How much do Soleil products cost?
Soleil Kérastase line prices vary based on the product and format. At Alexim Atelier Duomo we offer retail prices aligned with the professional Kérastase channel, with diagnostic consultation included and summer gifts reserved for our clients. For a personalized quote on the products you are interested in, contact us on WhatsApp.

Where is the Alexim salon located in Milan?
We are on Via Giuseppe Mazzini 16, 200 meters from Milan Cathedral. The closest metro stops are Duomo (M1 and M3) and Missori (M3). For those coming by car, the area is within the ZTL Cerchia dei Bastioni: we recommend the Piazza Diaz parking lot or Autosilo Diaz. We are also easily reachable from the Quadrilatero della Moda and for clients arriving from Italian-speaking Switzerland and Canton Ticino.