Sampling technique is to help researchers to reduce the amount of data by using data from the subgroup (Saunders et al, 2016). Regarding by skincare consumer in Thailand are very large number of people and it make a difficult to collect data from all of them. Thailand is once country with high population, www.worldometers.info has shown current population of Thailand is 68,134,569 and divided into 77 cities. This study has a specific sampling of responsible to study with people in working age (between 25-45 years old) who live in Bangkok, Thailand because Bangkok is a capital city and people there are come from many cities in Thailand and there are different backgrounds. Questionnaire will be spread out through social media such as facebook, email and website also sample will be 200 respondents who usually use skincare product.
Random sampling (convenience sampling) is the method used to select respondents from the population of Bangkok. The city of Bangkok is divided into 50 districts, in order to reach people from different demographics questionnaires have been handed out to people from 25 districts across Bangkok.
The questionnaires were issued to a simple group of people in working age (between 25-45 years old) in Bangkok, Thailand. Then the information collected will be used in the statistical analysis.