A case study each day: practical process sharing
2024/12/12
Gucci Dionysus suede bag cleaning and recolouring
1. Pre-fix the colour: Red suede can lose colour severely, so the source requires an acid treatment before cleaning to fix the colour. Dissolve Anti-Yellowing Colour-Brightening Neutralising Acid in hot water, adjust the pH to about 3 and brush-clean once as usual.
2. Cleaning: Dilute Suede and Nubuck Cleaner with 10~15 times hot water and add 5% Heavy-Duty Degreaser. Wipe or brush away dirt. Where mould is present, also add 5% Anti-Mould Bactericide.
3. Second acid treatment: After cleaning, repeat step 1. Its stated roles are: 1. Remove remaining dirt and cleaner so the nap is drier and fresher. 2. Fix and brighten the colour to prevent darkening and uneven light/dark areas.
4. Colour mixing: Mix Special-Effect Suede Colouring Agent, Suede and Fabric Colour Paste and High-Concentration Dye Solution to match the colour, then set aside.
5. Colour application: Spray evenly at medium air and medium fluid, using a hairdryer alongside spraying to dry quickly. Wet suede appears darker, so drying allows a more accurate colour judgement.
4. Colour fixing: Spray Suede Fixative to fix the colour and improve colourfastness.
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Gucci Dionysus suede bag cleaning and recolouring
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Understand the sequence and decisions
Additional explanations based on this case’s original record.
Cleaning, recolouring and fixing are linked in this red-suede case. Read the whole sequence, including the treatments before and after cleaning.
The two acid treatments occupy different stages
One comes before cleaning and the second after it, with distinct stated purposes. Keep both positions in the sequence.
Source reference：Pre-fixing; second acid treatmentCompare colour in a consistent dry state
The source explains that wet suede looks darker. Dry during spraying before judging whether the colour needs further adjustment.
Source reference：Colour applicationMixed colour is not the end of the process
Fixing follows application and addresses colourfastness. A close colour match and a completed process are separate checkpoints.
Source reference：Colour mixing; colour fixingQuestions and answers
Why use a hairdryer while spraying colour?
The source says wet suede appears darker; drying helps judge the colour accurately.