The Bible does not explicitly forbid Christian women from wearing makeup or hair extensions. Interpretations of relevant scriptures vary, leading to different viewpoints within Christianity.
Some Christians believe that focusing on inner beauty and modesty is more important than outward appearance, citing verses like 1 Peter 3:3-4, which encourages focusing on inner beauty rather than outward adornment. They may view excessive makeup or hair extensions as promoting vanity and drawing attention to oneself in a way that detracts from God.
Other Christians believe that wearing makeup and hair extensions is a matter of personal choice and does not necessarily contradict Christian principles. They may argue that enhancing one's appearance can be a form of self-care and can even be seen as presenting oneself well to the world. They might emphasize verses like 1 Corinthians 10:31, which encourages doing everything for the glory of God, suggesting that even wearing makeup can be done in a way that honors God.
Ultimately, whether a Christian woman chooses to wear makeup and hair extensions is a matter of personal conviction and discernment, taking into account her understanding of scripture, her conscience, and the guidance of her church community.