Lazartigue Sunlight Lightening Spray: An Affordable Alternative to Balayage

A salon blond look once meant spending three hours in the chair and facing an eye-watering bill.

This spring, a new spray says it can offer an alternative.

As the days become brighter, the desire to lighten hair returns almost as reliably as the urge for an iced coffee. Rather than arranging a costly balayage appointment, a new French “sunlight” spray claims to create a subtle, just-back-from-holiday glow at home for less than €30, while being gentler on the hair fibre than conventional bleach.

From expensive balayage to affordable sunlight hair

Balayage and “back-from-holiday” highlights remain among spring 2026’s leading hair trends, alongside 3D “Goldie Contrast”, Light Line colour and skin tone hair. Each look aims to bring warmth and luminosity to the face without leaving a severe line at the roots.

The downside is both the cost and the potential damage. In many European salons, a full balayage on long hair can readily exceed €150, while prices in larger UK and US cities can rise well above $200. Standard lightening works through oxidation, a process that can compromise the cuticle, make the hair surface rougher and remove natural shine from hair that is already delicate.

At-home options, including lemon juice and homemade chamomile rinses, have circulated on social media for years. Yet many hairdressers are wary of them: when used regularly or without suitable aftercare, they can leave hair dehydrated and prone to breakage, particularly in strong UV conditions.

Between salon bleach and risky kitchen experiments, a new mid-way option has arrived: a controlled, progressive lightening spray designed for everyday users.

This season’s much-discussed product is Sunlight Lightening Spray by French haircare specialist Lazartigue. The brand presents it as an affordable “fake holiday” effect for blond to light brown hair, priced at under €30.

What the Sunlight spray actually does

Instead of acting as a conventional dye with one fixed outcome, Sunlight works as a progressive brightening treatment. It is intended to recreate the way sunshine gradually lightens hair over several weeks at the beach, but with more precision and control.

Its formula relies on three key elements: naturally lightening botanical extracts, a modest amount of traditional oxidant and moisturising care ingredients.

• Chamomile: a plant traditionally used to gently brighten fair hair.
• Centaury: a botanical containing blue pigments, intended to neutralise yellow or brassy undertones.
• Hydrogen peroxide: included at a low concentration to lift the hair colour progressively.
• Hyaluronic acid: helps draw in and retain moisture, countering the dryness commonly linked with lightening.

According to Lazartigue, 91% of the formula’s ingredients are of natural origin. The alcohol-free spray is also designed to avoid the tight, dehydrated sensation associated with some lightening sprays.

The promise: a soft, sun-kissed blond effect, tone by tone, rather than a dramatic, obvious colour change in one go.

Who this product is really for

Sunlight is intended for people with blond to light brown hair, whether it is natural or colour-treated. On very dark hair, any result is likely to be extremely subtle, if visible at all, and may turn warm or coppery.

It may be especially appealing to those who:

• want to prolong an existing balayage without returning to the salon for a full service
• feel hesitant about committing to permanent colour
• enjoy the appearance of “beach days” hair with little effort
• would rather see a gradual change than a dramatic before-and-after result

How to use Sunlight for a natural sun effect

The spray is designed for home use on either dry or towel-dried hair. This makes it straightforward to work into a routine without needing to schedule a complete wash day.

Step-by-step application

There are two ways to activate the product. Spending time in the sun produces the most natural-looking finish and supports the holiday-inspired appeal. A hairdryer is the more convenient choice on overcast days or for anyone wishing to reduce sun exposure to the scalp and face.

Think of each application as half a shade brighter, not a full-on bleach session. Patience is part of the process.

Full-head glow or subtle contouring

The whole head can be treated for a gentle all-over glow, or the spray can be focused on selected areas:

• Face-framing strands: lighter pieces around the face that provide a built-in contouring effect.
• Lengths and ends: concentrating on the mid-lengths and tips to create a “grown-out balayage” appearance.
• Crown highlights: applying it only to upper layers to imitate the effect of natural sun exposure.

For those concerned about uneven results, beginning with a few strands around the face offers a lower-risk way to try the product before attempting more extensive applications.

What hairdressers worry about with lightening sprays

Professional colourists tend to approach at-home lighteners with caution. Even in small amounts, hydrogen peroxide can gradually dry out hair when overused or paired with frequent heat styling.

Dermatologists also note that products activated by sunlight or heat should be used alongside scalp protection and UV care for the skin. Extended sun exposure on an uncovered scalp and face increases the likelihood of burns and longer-term damage.

To minimise the risks, colour experts suggest:

• limiting use to once or twice weekly instead of applying it every day
• using a nourishing mask or oil between applications
• avoiding use on hair that is already fragile or heavily chemically processed
• performing a strand test on a concealed section before applying it to the full head

Gentle care and realistic expectations make the difference between a flattering glow and straw-like, snapped-off ends.

Key terms behind the sunlight trend

A number of technical terms are frequently associated with this product and current hair trends.

Oxidation: the chemical process that brightens hair by breaking down its natural pigment, melanin. Both bleach and hydrogen peroxide rely on oxidation. Greater oxidation creates more lift, but also increases the chance of dryness and breakage.

Brassy tones: these warm undertones, including yellow, orange and copper, often become visible when dark or previously dyed hair is lightened. Centaury and traditional purple shampoos use cool pigments to help counterbalance them.

Skin tone hair: a newer trend in which hair colour is selected to complement the skin’s undertone, rather than simply following fashionable shades such as “ice blond” or “chocolate brown”. A delicate, sun-kissed look can be adapted for warm, cool or neutral complexions.

Real-life scenarios: when a sunlight spray works best

Consider someone with naturally dark blond hair that looks flat and slightly lacklustre after winter. Booking a full salon balayage could feel excessive in both cost and commitment. Applying a spray such as Sunlight once a week for a month may add dimension to the top layer and around the face, creating enough light-catching definition for selfies without obvious regrowth.

By contrast, someone with deep brown hair that has already been coloured and who wants a dramatic blond transformation is unlikely to get the result they want. A gradual spray is not a replacement for professional bleaching followed by careful toning. In this situation, stylists advise using sprays like these later on, to maintain and softly refresh blond hair between salon appointments.

Timing also matters. Spring and early summer are the most suitable seasons for this kind of product, as there is moderate sunlight and hair is usually in better condition than it is after intense summer UV, seawater and chlorine. Heavy use at the end of a long beach holiday could worsen existing dryness.

Used strategically, sunlight-style sprays sit somewhere between a brightening haircare product and an entry-level colour service.

For anyone hoping to space out salon visits or experiment with a lighter shade at lower risk, this under-€30 option provides a gentle, controllable way to welcome spring without committing to a full dye job.