Strip away the marketing and a home salon service is three things: a trained person, a portable version of a salon workstation, and a legal permission to operate outside a fixed premises. The people fall into two broad groups. Company-employed beauticians work for a licensed home-services firm that handles their visas, training and equipment, and they usually arrive in uniform with standardised kits. Independent freelancers operate on their own permits and vary far more, both in skill ceiling and in hygiene discipline. Neither model is automatically better, but they fail differently: companies can be rigid about what is in the package, while freelancers can be inconsistent about sterilisation.
The kit is where most quality differences hide. A serious mobile beautician carries a folding manicure table or lap desk, an LED curing lamp with known wattage, an e-file with either autoclaved or single-use bits, sealed pouches of sterilised metal tools, disposable liners for soak bowls, a cape and drop sheet for hair work, and a professional dryer, because the 1,600-watt travel dryer in your bathroom cannot do a proper blowout. Ask what they bring before you book. A vendor who can answer precisely has thought about the workflow; one who says only that they bring everything usually has not.