Balayage can actually be easily performed a second time ✅ It can even be simpler and faster than the first time. Key points are as follows: 1. The shadow length should not be less than 8:2. The best ratios are 6:4 or 7:3. Otherwise, it will be extremely difficult to separate during the second session. 2. When the client returns for a second bleaching session, do not cut the hair length first—bleaching must be done first. 3. Advise clients not to trim their hair casually to avoid damaging the structure ❌. 4. Remind clients to maintain regular hair care, especially for extreme hair colors above level 9 or hair that is already damaged.