Employers are responsible for providing, replacing and paying for personal protective equipment.
PPE should be used when all other measures are inadequate to control exposure. It protects only the wearer, while being worn.
If it fails, PPE offers no protection at all.
When deciding about PPE ask the supplier, your trade association or the manufacturer.
It is important that employees know why they need PPE and are trained to use it correctly. Otherwise it is unlikely to protect as required.
When employees find PPE comfortable they are far more likely to wear it.