Efficacy Verification of Oil Control Cosmetics (T/SHRH 001-2016)

Efficacy Verification of Oil Control Cosmetics (T/SHRH 001-2016)

Efficacy verification of oil control cosmetics (T/SHRH 001-2016):The oil control cosmetics market is facing a crisis of trust. According to data from a certain e-commerce platform, only 29% of products claiming '24-hour oil control' can maintain their effectiveness for more than 8 hours through professional testing. T/SHRH 001-2016 "Evaluation Method for the Efficacy of Oil Control Cosmetics", as the first group standard for oil control testing in China, has established a scientifically validated industry benchmark through a three-dimensional technology system of sebum quantification, oil light imaging, and long-term regulation. Based on this standard, Zhongke Testing has completed more than 500 batches of product testing. After 28 days of testing, an oil control lotion containing 1% zinc salt has reduced the sebum secretion of the subjects by 27.6%, and the oiliness area by 31.2%, providing a powerful data support for efficacy claims.

Standard Core Testing System and Technical Principles

T/SHRH 001-2016 adopts a progressive evaluation model of 'in vitro adsorption human validation mechanism analysis'. In terms of quantifying sebum secretion, the standard specifies the use of a Sebumeter ® SM815 tester accurately measures the oil content on the skin surface in units of μ g/cm ². Clinical data shows that the baseline value of facial T-zone in healthy adults is usually between 25-45 μ g/cm ², and qualified oil control products should decrease by ≥ 20% from baseline after 28 days of use. A certain essence containing PCA zinc reduced the amount of forehead sebum from 38 μ g/cm ² to 26 μ g/cm ², and the oil control rate reached 31.6%, reaching the standard of significant improvement.

Oil gloss visual evaluation using Visiosan ® The VC98 skin image analysis system captures the surface light reflection intensity of the skin through a 625nm wavelength light source and calculates the proportion of oily surface area. The standard requires that the oil gloss index of the product should decrease by ≥ 15% after 4 hours of use. In actual testing, the pre makeup lotion containing silane based oil absorbing ingredients reduced the oily surface area of the face from 23% to 14%, and the visual improvement effect was significantly better than that of the placebo group.

The standard emphasizes the importance of long-term regulatory effects. Evaluate the product's ability to regulate sebaceous gland function rather than simply inhibit it through 28 days of continuous use testing. Research has confirmed that high-quality oil control products can not only instantly adsorb oils and fats (with an in vitro adsorption rate of ≥ 80%), but also stabilize the sebum secretion rhythm by inhibiting the activity of 5 α - reductase, avoiding the rebound effect of 'more control, more oil'.

Standardized testing process and quality control

The screening of subjects must meet strict inclusion criteria: individuals aged 18-45 with oily/mixed skin (baseline value of sebum analyzer detection ≥ 25 μ g/cm ²), who have not used oil control products in the past week and can cooperate to complete a 28 day cycle of testing. Each group has an effective sample size of ≥ 30 cases, ensuring statistical significance. A clinical study of a multinational brand showed that when the sample size increased from 20 to 30, the confidence level of the test results increased from 85% to 95%.

The experimental design adopts a double-blind control principle and is divided into a blank control group, a matrix control group, and three dose groups. Use 2mg/cm ² of the test product daily for 28 consecutive days, with key time points being 2 hours (immediate effect), 8 hours (short-term effect), 14 days (mid-term effect), and 28 days (long-term effect) after use. Environmental control requirements include constant temperature (22 ± 1 ℃) and humidity (50 ± 5% RH). Participants are required to sit quietly for 30 minutes before testing to avoid interference factors such as temperature and emotions.

The reliability of data is guaranteed through three-level quality control: daily instrument calibration (accuracy error ≤ 2%), two person parallel experiments (data deviation<5%), and third-party blind review. A comparative experiment in a certain laboratory showed that the difference in sebum content measurement among different operators for the same subject was only 3.2%, far below the standard allowed threshold of 10%.

Technological Innovation and Practical Application Cases

The in vitro oil adsorption testing technology breaks through the limitations of traditional detection, using simulated sebum (containing 35% triglycerides, 15% fatty acids, and 5% cholesteryl esters) mixed with the product in a ratio of 1:2, incubated at 37 ℃ for 1 hour, and then centrifuged for separation. The remaining oil content is analyzed by GC-MS. A powder containing porous silicon microspheres showed an oil adsorption rate of 89% in this test, providing pre validation for the high oil control effect in subsequent human trials.

Multi index joint evaluation system enhances the persuasiveness of detection. In the development project of an oil control lotion, Zhongke Testing synchronously monitored the amount of sebum secretion (down 27%), transcutaneous water loss (stable), pore area (down 18%) and the number of propionibacterium acnes (down 42%). The full range of validation products gave consideration to skin barrier health while oil control. This product has successfully passed the Tmall 'Scientific Anti Acne' certification with complete testing data.

In practical applications, a certain brand optimized its formula based on test results: the initial formula contained 2% salicylic acid, which could quickly control oil, but a 12% increase in TEWL value caused dry skin. By adjusting the compound formula to 1% salicylic acid+0.5% ceramide, secondary testing showed a 22% decrease in sebum and no significant change in TEWL value, achieving a balanced effect of 'oil control without dehydration'.

Advantages and Industry Value of Testing Services

The Zhongke Testing Oil Control Efficiency Laboratory is equipped with a complete set of equipment certified by ISO 17025, including Sebumeter ® SM815 sebum analyzer (detection range 0-200 μ g/cm ², accuracy ± 1 μ g/cm ²), Visioscan ® The VC98 skin image analyzer (resolution 5 μ m) can simultaneously obtain objective data and visualized images. The oil control gel of a certain medical beauty brand passed the laboratory test and proved that it can delay the peak of sebum secretion for 2 hours, providing direct evidence for the claim of 'long-term oil control'.

Compliance support covers the entire process: from formula pre evaluation (avoiding stimulating ingredients such as alcohol), clinical trial design (ethical review) to report issuance (in compliance with the "Cosmetic Efficacy Claim Evaluation Specification"). In 2024, assisted a domestic brand in completing the dual effect declaration of 'oil control+repair'. The report showed that after 28 days of use, the product not only reduced sebum by 25%, but also increased the expression of silk fibroin by 18%, successfully entering the TOP5 of Watsons' oil control category

With the deepening implementation of the Regulations on the Supervision and Administration of Cosmetics, T/SHRH 001-2016 has become a technical threshold for the entry of oil control products into the market. Enterprises should attach importance to early detection intervention and establish consumer trust through scientific data. According to data from Zhongke Testing, oil control products that have been systematically validated have increased consumer repurchase rates by 2.3 times and reduced complaint rates by 65%, truly achieving a win-win situation between commercial value and consumer interests.