Creating a comprehensive skincare guide that spans from novice to expert levels requires a detailed roadmap covering essential knowledge, techniques, and routine formulations tailored to each level. The following framework outlines modern, science-based guidelines and estimated timelines for mastering skincare.
### Timeline Overview
- **Novice Level:** 0-1 Month
- **Intermediate Level:** 1-3 Months
- **Advanced Level:** 3-6 Months
- **Expert