Every yacht laundry has one enemy above all others. It is not red wine. It is factor 50, rubbed into a guest back, transferred to a white cotton robe, folded and left in a hot laundry basket for six hours in the Mediterranean sun. By the time you find it, the mark is orange, the fibre has cooked, and the robe is one of a matching set of eight.
Why sunscreen is so vicious
Sunscreen is a combination stain with three separate attack vectors:
- The oil carrier — an emulsion that is oleophilic and binds hard into polyester and elastane.
- Avobenzone — a chemical UV filter that reacts with iron in hard water to form a rust-coloured complex. This is the classic orange or yellow stain that appears where there was no visible mark before.
- Titanium dioxide and zinc oxide — mineral filters that sit as a physical white pigment and must be flushed out mechanically.
Self-tan is worse in one respect: DHA (dihydroxyacetone) develops colour over hours by reacting with proteins. It will keep darkening on the fabric and on the guest.
Treatment
Sunscreen (fresh):
- Do not wet it first. Scrape off surplus with the back of a spoon or a bone scraper.
- Apply a dry-side / solvent-based degreaser or a non-ionic surfactant directly to the oil.
- Work it in gently with the fingers or a soft brush; leave 5-10 minutes.
- Flush with warm water, then wash at the maximum temperature the fibre allows with a good surfactant — heat is your friend on oil and your enemy on protein.
- Check before drying. If the shadow is still there, repeat. Never dry it.
Sunscreen (set orange stain): treat as a rust/oxidation problem — a mild acidic rust remover or oxygen bleach soak on white cotton. On elastane or protein, accept limits and escalate.
The yacht stain table
| Stain | Class | First action | Then | Never |
|---|---|---|---|---|
| Sunscreen | Oil + dye + mineral | Dry-side degreaser | Hot wash, surfactant | Water first; drying before it clears |
| Self-tan (DHA) | Dye | Cold rinse immediately | Oxygen bleach soak on white cotton; sunlight helps | Delay — it darkens by the hour |
| Salt water | Mineral | Rinse in cool fresh water | Normal wash | Ironing salt in — it burns yellow and abrades fibre |
| Rust | Mineral | Acidic rust remover / oxalic acid | Rinse and neutralise | Any bleach — it sets rust black |
| Red wine | Tannin (+dye) | Blot, flush cold, then warm water | Tannin formula or oxygen bleach | Salt/soap first (sets it); hot water on a protein-fibre garment |
| Ink (ballpoint) | Dye | Blot; isopropyl alcohol on a white pad from the back | Flush and wash | Rubbing (spreads it into a halo) |
| Make-up / lipstick / foundation | Oil + dye | Dry-side spotter for the oil | Then wet-side for the pigment | Water-first; hot water |
| Perspiration | Protein (+ aluminium salts) | Cold soak; mildly acidic neutraliser | Wash warm | Heat, chlorine bleach on silk (yellows it) |
Onboard Notes
- Prevention is the real answer. Dark or patterned beach towels and robes, and a rule that sunscreened guests get a towel over the lounger, will save more linen than any spotter in the locker.
- Warn a self-tanning guest, politely, that white bedlinen and DHA do not coexist. Offer them a set of dark towels; it is an act of service, not a complaint.
- Elastane swimwear plus sunscreen plus heat equals dead elastane. Rinse guest swimwear cool within the hour, every day.