Fortify System

STRATUS

Strengthening Leave-In · Strengthen System

Stratus is a strengthening leave-in designed to reinforce hair structure while maintaining softness, flexibility, and natural movement.

Sizige Stratus Leave-In Strengthening Conditioner spray bottle

Product Overview

This formula delivers targeted protein support alongside lightweight moisture and conditioning, helping hair feel more resilient and better supported without stiffness or surface buildup. Stratus absorbs cleanly into the hair fiber, improving strength and manageability while preserving the hair's natural character.

Stratus is designed to support hair that benefits from reinforcement between washes and treatments — strength that integrates seamlessly into daily care.

Defined by Science

Stratus helps hair:

  • Feel stronger and more resilient without rigidity
  • Improve elasticity and fiber cohesion
  • Detangle easily with smooth, controlled slip
  • Maintain softness and flexibility while reinforcing structure
  • Appear more stable, refined, and better supported

The experience is lightweight and composed — strength that feels wearable, balanced, and effortless.

Guided by Nature

Stratus is structured around lightweight, ongoing reinforcement designed to support strength while preserving movement and flexibility.

TriCore Complex™
Supports balance across hydration, surface behavior, and fiber response — helping reinforcement integrate cleanly into daily wear.
Bamboo Bioferment
Provides foundational resilience support, contributing to durability and structure while maintaining a lightweight feel.
Keratin, Wheat Protein & Silk Amino Acids
Reinforce internal cohesion and surface integrity, supporting strength that feels flexible, stable, and wearable.
Abyssinian Oil & Camellia Seed Oil
Lightweight oils that support softness and control while maintaining clarity and natural movement.

Together, these elements allow Stratus to reinforce hair subtly and continuously — supporting strength, flexibility, and control between washes and treatments.

Balanced by Design

Stratus is for hair that benefits from ongoing strength support without heaviness.

It is well suited for hair that feels more fragile, overextended, or less resilient, as well as hair exposed to heat, styling, or environmental stress. Stratus supports reinforcement while remaining soft, flexible, and easy to work with.

How to Use

  1. Apply to clean, damp hair and distribute through lengths.
  2. Do not rinse. Style as desired.
  3. Use regularly to support strength, manageability, and long-term hair performance.

Part of the Strengthen System

Stratus is a leave-in component of the Strengthen System, designed to reinforce hair structure beyond cleansing and treatment.

It works alongside Equinox Shampoo and Equinox Mask to support strength from wash through wear, while layering seamlessly with Align and Hydrate systems as needed.

Explore the Fortify System

Ingredients (INCI)

Full ingredient list

Water (Aqua), Aloe Barbadensis Leaf Juice, Cetearyl Olivate, Sorbitan Olivate, Bambusa Vulgaris Ferment, Sorbitan Stearate, Sorbitan Oleate, Glycerin, Crambe Abyssinica Seed Oil, Camellia Oleifera Seed Oil, Panthenol, Hydrolyzed Keratin, Hydrolyzed Adansonia Digitata Seed Protein, Hydrolyzed Wheat Protein, Silk Amino Acids, Algae Extract, Serenoa Serrulata Fruit Extract, Camellia Sinensis Leaf Extract, Chamomilla Recutita (Matricaria) Flower Extract, Myrciaria Dubia Fruit Extract, Limnanthes Alba (Meadowfoam) Seed Oil, Squalane, Pisum Sativum (Pea) Peptide, Tremella Fuciformis (Snow Mushroom) Extract, Opuntia Ficus-Indica Seed Oil, Copper Tripeptide-1, Urea, Propanediol, Hydroxypropyl Cyclodextrin, PEG-40 Hydrogenated Castor Oil, Polysorbate 20, Di-PPG-2 Myreth-10 Adipate, Ethylhexyl Olivate, Lactic Acid, Phenoxyethanol, Ethylhexylglycerin, Fragrance (Parfum).

Fortify System

Pairs with

Ready to bring STRATUS into your routine?

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