1, tone: 163 and 165 have different tones. 163 has a brighter or softer tone, while 165 has a darker or more vivid tone. Many people prefer the hue of 163 nail polish.
2. Trend: Some people think that 163 is more in line with the fashion trend in 2023, or more suitable for the current fashion styles. This will affect some people's preferences for 163 and 165.