Adverse hair and scalp conditions may influence shampooing, conditioning, colouring and perming by forcing the hairdresser to inform the client of their hair, skin or scalp condition and either proceed with caution or advise the client to seek medical advice. For example if a client has a small cut the hairdresser would inform the client before proceeding with the shampoo and take special care not to inflame the area. If a client has lice, the hairdresser would tactfully inform the client and advise the client to seek medical advice and return when the infestation is cured.
