The RPSexdoll make-up removal needs to be selected according to pigment type and properties of materials. The oily make-up (color fastness ≥4) that is used on the TPE surface should be microemulsion make-up remover with pH value 7.5-8.2 (HLB value 12-14). Experimental results show that Wiping below 0.5N/cm² pressure by a microfiber cloth with ≤3μm fiber diameter and circular motion, 98% of the pigment deposit can be removed in 120 seconds, and the roughness of the surface (Ra value) of the material is only increased by 0.2μm. Japan Dollfie Dream official guide noted that the 20% iso-dodecane-containing makeup remover oil can enhance silicone makeup stripping efficiency by 40%, and the swelling is maintained at 0.3%, whereas acetone solvent (concentration >5%) will reduce TPE hardness (Shore A) by 8-10 degrees, and service life is reduced by 30%. The nano-scale cerium oxide polishing agent with particle size of 50nm, polished for 3 minutes at a rotation rate of 3000rpm, possessed the capability in 2023 to reduce the color difference value ΔE of UV-curable resin coating from 15.2 to 0.8 and restore factory-level surface gloss (85GU±2).
From the economical aspect, the Pro grade rpsexdoll Makeup remover Set (25−40) contains 30mL makeup remover, 5 cleaning films (thickness 0.05mm) and silicone scraper, and costs 0.8−1.2 per clean, 93% less than factory return cost ($150/ time). According to RealDoll, misuse of makeup remover products containing alcohol (≥10%) can increase the porosity of silica gel by 1.2% and risk of microbial growth by 5 times. A foundry test report in China, Dongguan, states that the use of 40℃ constant temperature steam (flow 0.3L/min) pretreatment for 60 seconds can lower the removal time of water-soluble makeup (acrylic resin base) from 180 seconds to 75 seconds, and the penetration depth of the pigment is reduced by 87%. The EU EN71-3 regulation stipulates that the residue of heavy metal from the material upon makeup removal must be less than lead ≤0.7μg/cm² and cadmium ≤0.2μg/cm².
Technological innovation in South Korea, Synthetics Lab magnetic makeup system (magnetic particle size of the pigment 1-3μm), is capable of adsorbing makeup particles to a degree of 99.9% in a period of 20 seconds utilizing the 600 Gaussian magnetic head, stopping physical friction-caused TPE wear (wear level ≤0.01g/time). The smart spectrum analyzer launched at CES 2024 can measure makeup residue rate in real time (accuracy ±0.05%) by scanning wavelength of 450-780nm, and automatically adjust biological enzyme cleaning agent (concentration 0.5%-1.2%). Abyss Creations 3D printing function peels makeup film (thickness 80μm), tensile strength 18MPa, residual rate after peeling is as low as 0.3%, and can be reused for ≥50 times.
Regarding risk control, the regular frequency of cleaning TPE material should be <1 time/week, otherwise the loss rate of surface antioxidant would be 2.7 times faster, and the yellow index (YI) would increase 4.2 points annually. Japanese company Doll House’s comparison experiment demonstrates that in the ultrasonic cleaning machine treatment of silicone material (frequency 40kHz, power 50W), if the time is longer than 90 seconds, the lubricant loss rate at the internal skeleton joint will be ≥15%, then the activity Angle will reduce by 8°-12°. Market trend shows that the volume of RPSexdoll special cleaning products in the world market will be $68 million in 2023, where the proportion of degradable plant-based makeup remover (28 days decomposition cycle) will increase from 5% in 2020 to 22%, and its surface tension ≤30mN/m can be completely cleaned by 0.1μm micropores. 170% stronger than petroleum-based products.