Amazon's US marketplace remains the top choice for sellers, with 73% of new sellers achieving their first sale within 12 months—far surpassing rates in Germany (38%), the UK (32%), and Canada (16%). The US market's unparalleled traffic volume and niche viability (e.g., "sourdough starter jar" garners 26,766 monthly searches vs. 179 in Australia) enable specialized businesses to thrive. Despite rising fees and competition, the US offers superior scalability, while international expansion often proves challenging—69% of sellers operate in only one marketplace. However, long-term success remains competitive, with under 8% of pre-2019 seller accounts still active.

With the growing popularity of at-home beauty devices, consumers now have access to advanced skincare technologies like lasers, RF (radiofrequency), microcurrent, and LED light therapy. However, choosing the right device can be overwhelming. This guide explains the different types of beauty devices, their benefits, safety concerns, and key purchasing considerations.

RF beauty devices use radio frequency energy to heat the dermis, boosting collagen. Clinical studies confirm wrinkle reduction and lifting effects, with desktop models offering stronger, deeper-penetrating energy.

When choosing an LED light therapy mask, prioritize light types (red/blue/yellow/NIR), irradiance, comfort, and cost-effectiveness. Proper usage ensures safety and efficacy.