This research was conducted with the aim to identify personal factors and the factors of the marketing mix that influenced the decision to buy beauty drinks. It also looked at the marketing mix factors that were associated with the decision to buy beauty drinks. A sample of 400 people was selected through purposive sampling and snowball sampling. The instrument used to collect data was a rating scale questionnaire and interviews categorized by their professions. The statistics used in this research were statistical hypothesis testing Pearson Correlation Coefficient qualitative analysis (interviews) t-test Independent and F-test at the level of statistical significance of .05. The results were as follows. 1) The analysis of individual factors showed that the majority were females between 26-30 years old with diplomas with an average income per month from 10001 to 20000 baht. 2) Personal factors influencing the decision to purchase beauty drinks were high in the overall purchasing decisions. 3) The result of the study to examine the relationship between the marketing mix associated with the decision to purchase beauty drinks was positively and moderately correlated with the marketing mix in 7 aspects.

The objectives of this study are to study the usage of the marketing mix factors application for decision making to select wedding consult services at Bangkoknoi district in Bangkok metropolistan to study the decision behavior when selecting wedding consult services as well as comparison of the marketing mix factors in selecting wedding consult services classified as per- individual factor. The result showed that the product factor was highly important as proper-services-as-required was emphasized. The price factor was highly important as clearly displayed-price was emphasized. The place factor was highly important as ease-of-traveling was emphasized. The promotion factor was considered highly important as special-discount from normal rate was emphasized. The result from hypotheses testing showed that the sample group with different age education average income and career tend to use the marketing mix factors in selecting wedding consult services differently with a significant statistical difference of 0.05 while the sample group with different gender tend to use the marketing mix factors in selecting wedding consult services indifferently with a non-significant statistical difference of 0.05.