Re: Beauty Treatment mishap
If you are buying a service, that service must be provided with reasonable care and skill (and if not then you have grounds for an action for breach of contract).
Alternatively, you MAY have grounds for an action for negligence.
If you are paying someone for a beauty treatment, then they will owe you a 'duty of care'.
If they breach that duty of care, and harm results directly : you will have grounds for an action for negligence.
The (likely) issue for both is if they acted with reasonable care & skill, as if they did they wouldn't have breached the contract nor breached their duty of care.
They may claim they acted with reasonable care and skill : no breach of contract
(If there was no harm, or no breach of duty of care, then no negligence).
Can they claim there was no harm done?
Can they claim they performed the treatment with all due care and skill (and it is just a hazard of the treatment that sometimes it doesn't work)?.