Product Overview

Achieve Mirror-Like Shine & Frizz-Free Hair with L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum

Transform dull, frizzy and unruly hair into beautifully smooth, glossy locks with L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum 50ml. This lightweight professional finishing serum is expertly formulated to smooth the hair cuticle, tame flyaways and deliver an ultra-glossy, mirror-like finish without leaving hair greasy or heavy.

Designed for all hair types, especially frizzy, dry, coarse and chemically treated hair, the Keratin Alpha Sleek Mirror Sleek Serum helps lock in moisture, improve manageability and protect against humidity, leaving hair silky soft and effortlessly sleek all day long.

Whether you're finishing a salon blow-dry, straightening your hair or enhancing your natural shine, this luxurious serum provides the perfect finishing touch for healthy-looking, polished hair.

Why You'll Love It

• Delivers a mirror-like glossy finish.
• Smooths frizz and flyaways instantly.
• Leaves hair silky soft and lightweight.
• Helps protect against humidity.
• Improves manageability and smoothness.
• Adds shine without a greasy residue.
• Perfect for finishing any hairstyle.
• Suitable for all hair types, including colour-treated hair.
• Professional salon-quality formula.
• Ideal for everyday use.

Laura Loves ❤️

"If you want that gorgeous salon shine, this serum is a must-have. I love using it as the final step after styling because it instantly smooths the hair, tames flyaways and gives the most beautiful glossy finish. It's lightweight, so it never leaves the hair feeling oily, and it's perfect for clients with frizzy or dry hair who want sleek, healthy-looking results. Pair it with the Keratin Alpha Sleek Shampoo, Conditioner and Hair Mask for the ultimate smoothing routine."

— Laura & The Let Them Talk Beauty Team

How To Use

On Damp Hair

• Apply 1–2 pumps through the mid-lengths and ends before blow-drying to help smooth and protect the hair.

On Dry Hair

• Apply a small amount to finished styles to enhance shine, reduce frizz and create a sleek, polished finish.

Laura's Pro Tip

Less is more! Start with one pump and add more only if needed. Focus on the mid-lengths and ends to keep your hair looking light, glossy and beautifully smooth.

Perfect For

• Frizzy hair
• Dry hair
• Coarse hair
• Dull hair
• Colour-treated hair
• Chemically treated hair
• Heat-styled hair
• Flyaway control
• Humidity protection
• Everyday shine enhancement

Why Shop with Let Them Talk Beauty?

At Let Them Talk Beauty, Laura and her expert salon team are passionate about helping every client achieve healthy, beautiful hair. Renowned for luxury colour services, advanced hair repair treatments and Ireland's leading Grey & French Blending expertise, we only recommend professional products we trust and use every day in the salon. Shop with confidence and enjoy salon-quality results from the comfort of your home.