Social Networking Service (SNS) can be defined as an onlineplatform that is usedto create interpersonal connections. Nowadays,TikTok and Instagram are widely used astrending online platforms forpurchasingactivities among youth. The goal of this study is to identify how TikTok and Instagram features influences user’s behaviourto purchased or consumed productsas well asto study the impact of TikTok and Instagram platforms in determining customer preferences. One-on-one in-depth interview was conductedwith six participants among USIM students. Purposive samplinghad been used in selecting only participants who used and purchased products using TikTok and Instagram accounts. To find purchasing be-havioural themes, the data analysis was manually coded. The study's findings on TikTok and Instagram showits features can influencepurchasing products and both platforms impact in determining customers preferences.Interesting contentcan influence youth purchasing be-havioursuch as contentsportrayed through TikTok and Instagram Livesbesides emphasizing on social media featuresand engagement, marketing strategy, convenience,and audience’s preference. This research also found thatTikTok and Instagram platforms help users topur-chaseonline more convenientlyas bothplatforms areuser-friendly.