Professional hairdressing technical diagram and educational demonstration showing top-down and 3/4 view of the parietal top zone (crown and parting) on a mannequin head for balayage foilayage. Silver foil packets and envelopes folded neatly along soft diagonal chevron sections diverging from the natural hair part towards the crown. Clean professional salon infographic style, clearly showing sectioning lines, clips holding uncolored hair, educational visual guide for hair colorists, neutral bright salon background.
