No need. Female volunteers should have clean and tidy hair, which is not suitable for long hair. When choosing a hairpin or hairband, the style should be solemn and generous. Make-up should follow the principles of elegance, conciseness, moderation, solemnity and avoiding shortcomings, without heavy makeup or no makeup at all.

Male volunteers' hair should be clean and tidy, and often decorated and repaired. Don't have too long hair, don't cover your eyebrows at the front, don't cover your ears at the side, and don't be longer than the upper part of the collar of a suit shirt at the back. Don't have too thick hair or too long sideburns. Keep your face clean (shave) every day and keep your breath fresh at all times.