Syoss Intense Plex Leave in Serum
Not recommended for Straight, Oily, Damaged hair. This serum contains several harsh or potentially harmful ingredients.
Quick Description
Syoss Intense Plex Leave in Serum is a serum crafted by the brand to keep scalp and hair balanced. It is designed for everyday use and aims to leave hair feeling refreshed and lightweight. The formula features key ingredients selected to cleanse, support scalp comfort, and maintain a clean finish. Ideal for users wanting a thorough yet considerate cleanse with a focus on clarity.
Ingredient Overview
Highlights
Key Ingredients
Extremely drying
Preservative known for causing allergic reactions and irritation
Common silicone providing smoothness and shine, may build up
Acts as a mild surfactant and emulsifier
Emollient, can clog pores
Common preservative, generally safe in cosmetic amounts
Ingredient Table
| Ingredient | Details | Rating |
|---|---|---|
| Isopropyl Alcohol |
Extremely drying Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Bad |
| Methylisothiazolinone |
Preservative known for causing allergic reactions and irritation Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Bad |
| Dimethicone |
Common silicone providing smoothness and shine, may build up Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Laureth-4 |
Acts as a mild surfactant and emulsifier Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Isopropyl Myristate |
Emollient, can clog pores Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Phenoxyethanol |
Common preservative, generally safe in cosmetic amounts Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Fragrance |
Can cause allergies or irritation Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Methylparaben |
Preservative, generally safe but some prefer paraben-free Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Propylene Glycol |
Humectant, retains moisture Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Benzyl Salicylate |
Fragrance ingredient with potential for irritation in sensitive scalps Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Hexyl Cinnamal |
Jasmine-scented fragrance, may cause allergic reactions Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Citric Acid |
pH adjuster, gentle exfoliant Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Tetramethyl Acetyloctahydronaphthalenes |
Synthetic fragrance compound for long-lasting scent Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Linalool |
Fragrance component, potential allergen Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Linalyl Acetate |
Fragrance component that can cause sensitivity in some individuals Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Vanillin |
Fragrance ingredient with minimal impact on hair health Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Tridecyl Trimellitate |
Emollient that adds softness and shine without greasiness Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Tridecyl Stearate |
Emollient providing smoothness and reducing frizz Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Trimethylsiloxyphenyl Dimethicone |
Silicone that enhances shine and smoothness but may cause buildup Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Moderate |
| Water |
Base solvent, neutral Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Eau |
Hydrates and acts as a solvent for other ingredients Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Cetrimonium Chloride |
Antistatic, conditioning agent Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Hydroxyethylcellulose |
Thickening agent that enhances texture and moisture retention Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Distearoylethyl Hydroxyethylmonium Methosulfate |
Conditioning agent that reduces static and improves manageability Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Quaternium-91 |
Conditioning agent that softens and detangles hair Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Cetrimonium Methosulfate |
Mild conditioning agent that reduces static and detangles hair Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Panthenol |
Pro-Vitamin B5, adds shine and moisture Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
| Hydroxypropyltrimonium Betaine |
Conditioning agent that reduces static and enhances hair manageability Further: helps keep sebum and buildup in check, improves sensory slip, and stabilizes the formula across repeated washes.
|
Good |
Explanation of Key Groups
Surfactants
Primary and co-surfactants (e.g., Sodium Laureth Sulfate, Coco/Ampho betaines) provide the cleanse, foam, and removal of scalp oils. Mild co-surfactants help soften the feel and improve tolerance.
Clay Minerals
Clays like kaolin, bentonite, or montmorillonite absorb excess sebum and impurities, contributing to a fresher, balanced scalp feel without heavy residue.
Actives
Ingredients such as salicylic acid or zinc derivatives can support gentle exfoliation and sebum regulation, helping keep follicles clear and comfortable.
Humectants
Water-binding agents (e.g., glycerin, hyaluronate) attract moisture to reduce the stripped feel after cleansing and keep lengths softer.
Safety Notes & Allergens
- Fragrance allergens (e.g., linalool, geraniol, coumarin) may be present if fragrance is listed.
- Colorants (CI numbers or named dyes) are aesthetic only; skip if you react to synthetic dyes.
- Potential irritation: strong surfactants and fragrance allergens can bother very sensitive scalps.
- If you have fragrance allergies or highly reactive skin, patch test before full use.
Summary
Best suited for users seeking a clear, balanced cleanse. It effectively targets buildup with its surfactant system and supporting actives, while maintaining a light feel on the hair. Be mindful of surfactant strength, fragrance presence, and any colorants if you are sensitive.
Who is this product good for?
- ✓ People wanting a refreshing cleanse with balanced oil control
- ✓ Those comfortable with light fragrance in haircare
- ⚠ Very sensitive scalps should monitor for fragrance or surfactant irritation