Last update:
2 February 2026
di Elisa Branda
Having smooth, neat, and shiny hair doesn't necessarily mean resorting to professional treatments or complicated routines. Sometimes all it takes is the right product, applied correctly, to instantly transform the look of your hair. Smooth Diamond Illuminating Smoothing Spray It was created with this very goal: to tame frizz, protect from heat and amplify the hair's natural shine.
Designed for those who struggle with dull, lifeless, or frizzy hair every day, this leave-in treatment promises smoother, more manageable hair and intense shine, visible from the very first applications.
Diamond-Smooth Hair: The Diamond-Smooth Philosophy
The Smooth Diamond line of Garnier fructis It is designed to enhance straight or straightened hair, working not only on discipline but above all on reflection of lightThe visual result is that of more compact, uniform and luminous hair, with a mirror-like effect. liquid hair which makes hair immediately more well-groomed.
The spray works by coating the hair fiber with a transparent, lightweight film that helps smooth the hair's surface. This allows light to reflect more evenly, enhancing shine without weighing it down.
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Formula and active ingredients: what makes this spray special
The heart of the formula is the Vegetable Keratin Complex, obtained from hydrolyzed corn, soy, and wheat proteins. These ingredients work on the hair's structure, helping to strengthen it and make it visually more compact and manageable.
Alongside the vegetable keratin we find theArgan oil, known for its nourishing and smoothing properties. In this formula, it's used in a balanced dose: it helps improve softness and shine without making hair greasy or sticky.
The presence of Polysilicon-29 It's essential for the thermo-active effect. This polymer creates a protective film that activates with the heat of a hairdryer or straightener, helping to maintain smoothness longer and protecting hair from high temperatures, up to 230°C.
Ingredients: Aqua / Water Glycerin Dipropylene Glycol PEG – 60 Hydrogenated Castor Oil Laureth – 4 Argania Spinosa Kernel Oil Stearamidopropyl Dimethylamine Sodium Hydroxide Isononyl Isononanoate Hydrolyzed Corn Protein Hydrolyzed Soy Protein Hydrolyzed Wheat Protein Caprylyl Glycol Lactic Acid Polysilicone-29 Hexyl Laurate Phenoxyethanol Parfum / Fragrance (FIL Z70073266/1)
Texture and sensoriality
One of the most appreciable aspects of the Lisci Diamante spray is its ultra light textureSprayed onto damp hair, it spreads easily without leaving visible residue or stiffness. Hair remains soft, flowing, and natural to the touch, even after drying.
This also makes it suitable for those with fine hair or hair that tends to weigh down easily with richer straightening products.
How to use it to get the best results
After washing and detangling your hair, gently pat dry with a towel. Spray Smooth Diamond Spray onto damp hair, distributing it evenly through the lengths and ends.
Proceed with drying by dividing your hair into sections and using a straightening brush. The heat of the blow dryer is essential for activating the formula and achieving a taming effect. For even more defined straightening and intense shine, you can run a straightener over dry strands.
Visible results and declared performances
According to instrumental tests, the spray promises:
- maximum 72-hour anti-frizz effect
- maximum 100 hours of extra shine
- an increase in light reflection up to + 39 %
- thermal protection up to 230°C
With daily use, the perceived result is tidier hair, with visibly smoother, less frizzy and decidedly shinier hair, without the stiff effect typical of some straightening products.
To whom it is recommended
This spray is ideal for those with frizzy, dull, or difficult-to-manage hair, but also for those who simply want to enhance the shine of naturally straight hair. It's suitable for a variety of hair types, especially those who regularly use blow dryers and straighteners and are looking for a product that combines styling and protection.
An ethical and sustainable plus
The formula is vegan and approved by Cruelty Free International. Furthermore, the product is made in a facility powered by 100% renewable energy, a detail that adds value to a treatment designed for everyday beauty.
Conclusion
Garnier Fructis Lisci Diamante Illuminating Smoothing Spray is a practical and immediate ally for those who want smooth, tidy, and shiny hair, without sacrificing lightness. An easy-to-use, effective product designed to enhance hair day after day, right at home.
Where to buy
BUY HERE: AMAZON
- LONG-LASTING RADIANCE: Garnier Fructis Diamond Sleek Smoothing Spray...
- VISIBLE RESULTS: Discover smooth, shiny hair. The formula activates with...
- HOW TO GET SUPER SMOOTH HAIR: Apply Keratin Smooth Shampoo and Mask to your...
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I'm really curious to try it. I have the serum for straight hair and it has a fabulous anti-frizz effect!