Color-Deposit Shampoo: Technology, Stability & Compliance Risks

Color-deposit shampoos are not just tinted cleansers — they are one of the most technically demanding formulations in cosmetic haircare. Each pigment, surfactant, and stabilizer affects shade precision, rinseability, and scalp comfort. This article explains how they work, what can go wrong, and how Qyonz designs compliant, stable formulas for global brands.

🧠 Summary

Color-deposit shampoos bridge two worlds: cosmetic coloring 和 cleansing chemistry. This guide outlines pigment systems, stability risks, labeling rules, and what buyers should check before OEM production.

• How direct pigments work in surfactant systems
• Which stability factors control color life
• Why packaging choice matters more than you think
• How to keep claims legal under EU, FDA, and UK standards

1️⃣ How Color-Deposit Shampoos Work

Unlike oxidative dyes, these shampoos use direct pigments that temporarily bind to the outer cuticle. Each wash deposits a small pigment layer that enhances or neutralizes existing tones. For example:

• Purple — cancels yellow or brass tones in blonde hair
• Blue — balances orange hues in brunette hair
• Red/Copper — refreshes warm or faded tones

Key insight: These pigments sit “on” the hair, not “in” the cortex. That makes them reversible — but also sensitive to pH, surfactant type, and wash frequency.

2️⃣ Pigment Technologies & Trade-offs

Formulating color shampoos means balancing three pigment systems. Each behaves differently in foam, rinse, and storage stability.

Qyonz uses blended systems combining Acid Violet 43, Acid Blue 9, and polymeric stabilizers for superior tone control and rinseability.

3️⃣ Stability & Testing Considerations

The biggest OEM risk in color-deposit shampoos is instability — when pigments separate, fade, or stain packaging. Qyonz runs a 3-step validation process:

1. Accelerated Stability — 45°C / 28-day heat cycle
2. Freeze–Thaw Test — 3 cycles for pigment and surfactant compatibility
3. Packaging Compatibility — pigment migration and bottle staining check

Lab data: Qyonz purple shampoo maintained 94% color retention after 28 days and showed no staining on black HDPE bottles.

4️⃣ Compliance & Labeling Standards

Even without peroxide or ammonia, color shampoos are regulated as cosmetic coloring products. Each pigment must be authorized for use in target markets:

• EU: Must comply with Annex IV (Regulation EC 1223/2009)
• USA: Use FDA-certified D&C / FD&C dyes only
• UK/EU Exports: Require CPSR + Safety Assessor signature
• GCC / SEA: MSDS & COA mandatory for customs clearance

At Qyonz, each color-deposit formula is supported by a COA, MSDS, CPSR, and pigment source traceability document ready for brand filing.

5️⃣ Packaging & Storage Best Practices

Pigments are sensitive to light and reactive plastics. Common failures occur when using clear PET or unstable labels. Recommended solutions:

• Opaque or black HDPE bottles with UV inhibitor
• Internal PP cap liners to avoid backflow leakage
• Low-permeability label film (avoid dye migration)

We also test each packaging batch for color bleeding under high humidity and temperature (40°C / 85% RH).

Qyonz Factory Proof Box

FAQ

Q1: How long does the color effect last?
A: Usually 3–8 washes, depending on hair porosity and wash frequency.

Q2: Can color shampoos stain the scalp or towels?
A: Mild staining can occur. Qyonz balances pigment adhesion with optimized rinse-off formulation.

Q3: Are these shampoos safe for all hair types?
A: Yes, when formulated within approved dye concentrations and pH (5.0–6.0).

Q4: What’s the minimum order for custom shades?
A: MOQ 500 bottles per tone (existing packaging) / 2,000 with custom bottles.

🚀 行动呼吁

Launch a color-deposit shampoo that looks good, performs reliably, and ships globally with full compliance.
✅ Custom pigment matching (purple, blue, copper, silver)
✅ COA · MSDS · CPSR ready
✅ GMP & ISO 22716 factory certified

👉 Develop Your Color-Deposit Line with Qyonz
📩 电子邮件： [email protected]
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