The Quadbeauty "4-in-1 makeup pen™" typically refers to a multi-functional makeup product that combines four different makeup items or tools into one convenient pen-like packaging. A common concept includes having four different makeup products or tools in separate compartments within a single pen.

✔️ Convenience: The primary advantage is the convenience of having multiple makeup products or tools in one compact and portable pen.
✔️ Space-saving: It helps declutter your makeup bag or purse by consolidating multiple products into one.
✔️ Versatility: A 4-in-1 makeup pen often includes essential makeup items.
✔️ Time-saving: having all the necessary tools in one pen can save time during application.
✔️ Precision: The design of the pen can also provide precise application, especially for products like eyeliners, lip liners, and eyebrow pencils, where accuracy is crucial.