How is this hand serum different from a regular hand cream, and when would I choose one over the other?

A hand serum like this one is formulated with a higher proportion of active oils and extracts relative to thickeners and occlusives, so it feels lighter and sinks in more quickly than a traditional cream. The Dr.Sante SOS serum uses sea buckthorn oil and arnica extract in a base that spreads easily and leaves little to no surface film, which is practical if you need to type, handle paperwork, or use a touchscreen right after applying. A regular hand cream typically contains more waxes, butters, or petrolatum to create a heavier barrier; that's better for overnight repair or very cold, windy conditions where you need prolonged occlusion. You might keep the serum at your desk or in your bag for frequent reapplication during the day, and use a richer cream before bed or after exposure to harsh weather. Both can coexist in a routine — they serve different moments rather than competing.