Short answer: The soundest approach is to choose the treatment based on your personal needs and the current condition of your hair or skin, then follow the before and after instructions consistently.
Summer
Sun protection, lightweight moisturising and gentle cleansing after sweating come to the fore.
Winter
Cold air and indoor heating can increase dryness, so barrier-supporting care matters more.
Transitional seasons
Sudden shifts in temperature and humidity can increase sensitivity; don't overhaul your routine with several new products at once.
Professional assessment
Where there is marked dryness, acne, pigmentation or sensitivity, the treatment should be chosen on the basis of a personal assessment.
When is a professional assessment needed?
If there is an active infection, an open wound, marked sensitivity, a history of allergy, medication use or an unexpected reaction, consult a healthcare professional before any cosmetic treatment. This content is for general information and does not replace medical diagnosis or treatment.