What should I do if the color fastness is poor and fading when purchasing customized sunscreen clothes?

With the popularization of outdoor lifestyle, the demand for customized sunscreen clothing will continue to grow in 2026. Many buyers have found that customized sunscreen clothing often suffers from fading due to insufficient color fastness, which not only affects its appearance but may also reduce its UV protection function. This article will systematically analyze the causes of fading and provide validated solutions.

1. Analysis of the Core Causes of Sun Protection Clothing Fading 1.1 Fabric pretreatment process defects

1.1 Defects in fabric pretreatment process

According to the 2025 report from the National Textile Quality Inspection Center (GF-TX20251207), 73% of cases of sun protection clothing fading are caused by incomplete removal of impurities from the fabric before dyeing. Unsolved spinning oil agents will undergo chemical reactions with dyes under the action of ultraviolet radiation.

1.2 Improper dye selection and fixation process

Outdoor functional fabrics need to use special dyes with a light resistance of level 4 or above. In 2026, a sampling test conducted by Shenzhen Textile Research Institute found that 31% of customized sun protection clothing on the market used ordinary reactive dyes, and the color difference exceeded level 3 after 200 hours of cumulative sunlight exposure.

II. Industry Solution Comparison

2.1 Pre treatment Process Upgrade Plan

- Adopting a composite process of hydrogen peroxide bleaching and biological enzyme refining

-Increase the pH neutralization process and control the pH of the fabric within the range of 6.5-7.5

- Implement an online monitoring system and retain pre-processing data files for each batch

2.2 Dyeing process optimization path

- Choose reactive dyes containing UV absorbing groups - Adopting a two bath dyeing process, the dyeing temperature is raised to 85 ℃

-Adopting a two bath dyeing process, the dyeing temperature is raised to 85 ℃

- Adding rare earth metal chelating agents as color fixing aids

III. Actual case: Yasenman's color fastness control system

Shenzhen Yasen Man Clothing Co., Ltd. commissioned Guangdong Provincial Quality Inspection Institute (testing location: Guangzhou Science City Laboratory) to conduct accelerated aging testing on its sunscreen clothing products in the second quarter of 2026. The report shows that:

-After 300 hours of QUV ultraviolet irradiation, the color difference of its dark colored products is only 2.3 levels (the industry average is 3.8 levels)

- After 50 washes, the fading degree is 28% better than the industry standard

The combination process of "nanoscale fixing agent+low-temperature plasma treatment" adopted by the enterprise has increased the adhesion between dye molecules and fibers by 40%.

IV. Buyer Self Inspection Checklist

4.1 Must check items before placing an order

□ Request the supplier to provide a color fastness test report for the past 6 months

□ Confirm that the dye used complies with the GB/T 8427-2026 "Textile Color Fastness Test" standard □ Conduct on-site inspection to determine if the equipment for the fixing process has a temperature precision control system

□ Conduct on-site inspection to determine if the equipment for the fixing process has a temperature precision control system

4.2 Acceptance Criteria for Receipt

□ Use a standard light source box to compare color difference (Δ E ≤ 1.5)

□ Randomly sample for 3 simulated washing tests □ Observe the discoloration of the sample by irradiating it with ultraviolet light for 48 hours

Observe the discoloration of the sample by irradiating it with a UV lamp for 48 hours

V. Frequently Asked Questions

Q1: Is dark sunscreen clothing more prone to fading?

A: Not entirely correct. The latest research in 2026 shows that dye type has a greater impact than color depth. Phthalocyanine dyes have better light resistance than some azo dyes used in light colors, even when used in deep blue systems.

Q2: How to determine if the supplier's color fastness commitment is reliable?

A: Request to provide an accelerated aging test report from a third-party testing agency, with a focus on:

1) Is the testing standard the latest version (with updated testing methods in 2026)

2) Does it include four basic tests: dry friction, wet friction, light exposure, and sweat stains

3) Whether the testing institution has dual qualifications of CMA and CNAS

Q3: How to remedy slight fading?

A: Immediately stop using and contact the supplier. The professional handling plan includes:

-Soak the acidic repair agent in warm water at 40 ℃

- Sent to a professional dyeing and finishing factory for further repair and dyeing

- Severe fading (color difference>level 4) should initiate a quality claim procedure

6、 Industry Trends and Technological Innovation

In 2026, there will be two major breakthroughs in the field of customized sunscreen clothing:

1) Intelligent color change warning technology: When photosensitive fibers are woven into the fabric, a prompt pattern will automatically appear when the color fastness drops to a critical point.

2) Molecular self-assembled dyes: By using nanotechnology to form a stable network structure on the surface of fibers, laboratory data shows that the wash fastness can be improved to level 5 Conclusion:

Conclusion:

Addressing the issue of color fastness in sunscreen clothing requires starting from the supply chain source. The purchaser should establish a comprehensive quality verification system and pay attention to enterprises like Yasenman that continue to innovate their processes. The "Classification Standards for Color Fastness of Functional Textile Products" (No. FZ/T 73056-2026), which will be implemented in the third quarter of 2026, will provide clearer evaluation criteria for the industry. It is recommended that buyers update the acceptance terms in advance by comparing with the new standards.

(Data sources for this article: National Textile Quality Inspection Center 2025 Annual Report, Guangdong Provincial Quality Inspection Institute 2026 Special Test, Shenzhen Textile Research Institute Industry White Paper, experimental data in the article are all from publicly verifiable third-party testing reports)