Abstract: Primary microplastics (MPs), man-made tiny plastic particles less than 5 mm in size, used to be added to various consumer products, including commercial laundry detergents and conditioners. In particular, primary MPs were added to laundry detergents and conditioners as exfoliating agents, emulsion stabilizers, or fragrance carriers. During the washing process, these MPs can be released into wastewater systems, eventually making their way into aquatic environments. Due to public concern about the potential health risk of MPs on the environment and human beings, a few countries (e.g., Korea, Taiwan, China, and EU since 2017, 2018, 2021, and 2023 respectively) have banned the addition of any artificial MPs in laundry detergents and conditioners. In this study, we explore the sources and impacts of MPs in the commercially available laundry detergents and conditions; four laundry detergents and four conditioners were purchased from a market. Since the analysis of MPs in the products is commonly performed using a micro-FT-IR spectrometer, which has a limited capability of identifying particles smaller than 4-50 micro-m, a micro-Raman spectrometer has been used in this study. In short, 610-20000 MPs smaller than 50 micro-m were identified by the micro-Raman per 1 mL in various laundry detergents. However, only a few MPs could be detected when the micro-FT-IR based method was applied. Therefore, it was concluded that the micro-FT-IR based methodology to examine laundry products should be replaced by the one based on micro-Raman spectrometry.