A good professional nail salon will have:
Avoid human trafficking
Nail bars are one of the main targets of human trafficking in the UK and many EU countries.
What do employees look like?
Do they appear withdrawn and neglected or unwilling to engage? Do they appear younger than you'd expect? Are they avoiding eye contact, or is the presence or behaviour of another individual making them appear frightened? Are they resistant to being paid directly?
Is there a manager who takes the money and is overbearing or abusive?
Are there living quarters upstairs or attached to the nail salon? Are employees brought to work at the same time?
What do they sound like?
Do they seem hesitant to talk? Do they speak to others in the salon? Can they speak English? Being unable to speak English can increase people's vulnerability.
How do you feel?
It's difficult to quantify, but trust your gut instinct. Do prices seem 'too good to be true'? Is the vibe you're getting making you feel uncomfortable? If you can't quite put your finger on it but you feel that some of the above indicators are present, you can report suspicions to the Modern Slavery Helpline.