System Professional Liquid Hair X4L 100ml

System Professional Liquid Hair X4L is the intensive reconstructive treatment for sensitized and fragile hair. The formula with hydrolyzed keratin and essential amino acids repairs the hair fiber from within, restoring strength and resilience to the most damaged hair. If you are looking for a professional treatment that truly works in depth, this is the place to start.

What it is

It is a leave-on treatment from the System Professional Extra line, developed with Molecular Hair Refilling Technology. This technology allows active ingredients to penetrate the internal structure of the hair, filling gaps caused by chemical treatments, heat, or mechanical stress.

Who is it for

Suitable for sensitized, fragile hair damaged by coloring, bleaching, perms, or frequent use of thermal tools. Also suitable for those who notice a loss of elasticity and resilience in the hair fiber.

Benefits

• Reconstructs the hair fiber from within
• Strengthens fragile and sensitized hair
• Protects from further damage
• Improves the appearance and health of the hair
• Effect lasts up to 5 washes
• Suitable for chemically treated hair

Active ingredients and technology

The formula combines hydrolyzed keratin and essential amino acids, the same proteins that make up the natural structure of hair. Molecular Hair Refilling Technology optimizes the penetration of these ingredients into the hair cortex, repairing damage from the inside out.

How to use

After System Professional shampoo, towel-dry hair and apply 4-5 pumps of the product, distributing it evenly. Brush and blow-dry for 5 minutes to promote the absorption of active ingredients. Rinse and proceed with desired styling. For hair that is difficult to detangle, use a System Professional conditioner first.

Result

Visibly stronger, regenerated hair with a healthier appearance after the first use. The treatment reduces fragility and improves manageability of the hair over time.

Technical details

• Size: 100ml
• Line: Extra
• Brand: System Professional
• Type: Leave-on reconstructive treatment
• Use: On damp hair, after shampooing
• Technology: Molecular Hair Refilling Technology

Related products

• System Professional Luxe Oil Shampoo with Keratin L1 250ml — keratin shampoo to prepare hair for treatment
• System Professional Luxeoil Keratin Conditioning Cream L2 — keratin conditioning cream to complete the routine
• System Professional Balance Shampoo B1 — soothing shampoo for sensitive scalps

FAQ

How often should it be used? It is recommended to use it with every wash for very damaged hair, or 1-2 times a week as a maintenance treatment.

Should it be rinsed out? Yes, after blow-drying, the product should be rinsed out before proceeding with styling.

Can I use it without a hairdryer? The hairdryer is necessary to activate the absorption of the active ingredients into the hair fiber.

Why Planethair

Since 2000, we have selected professional products for hairdressers and end customers. The first Italian e-commerce specializing in salon brands, with over 25 years of experience and dedicated pre and post-sales assistance. Original System Professional products with official guarantee. Free samples with every order.