Hair care is the most leak-exposed category in FBA: caps pop, pumps depress under stacked cartons, and a single split liter can ruin a pallet's worth of labels. We seal-check and bag every bottle, build shampoo-and-conditioner duos as sealed single units, label expiration dates where formulas carry them — and review restricted spray formats case by case before anything ships.
The physics of the category are unforgiving. Hair products are dense liquids in flexible packaging, stacked high and conveyed fast inside Amazon's buildings. Flip-caps click open under pressure. Pump collars loosen with vibration. Tube crimps split at the corners. None of this is rare — it's Tuesday. Prep exists to make each failure a contained, single-unit event.
Multipacks add a second layer. The duo — shampoo plus conditioner, same line, same scent — outsells singles for many brands, but Amazon only sees a duo if it arrives as one sealed, single-FNSKU unit. We build those packs on the bench from verified matching variants, because scent mismatches are invisible at carton level and brutal in reviews.
Then there's dating. Masks, bond treatments and actives-led formulas carry shelf lives, and dated goods need readable expiration labels with enough life left for Amazon to accept them. And at the category's edge sit aerosols and pressurized formats: Amazon restricts them, we don't handle hazardous-classified goods, and the only responsible answer is a case-by-case review before you book freight.
All of it runs from Medley, FL — 12 minutes from Amazon's MIA1 site — on per-unit pricing with no setup fees or monthly minimums, and since Amazon dropped its own US prep and labeling service in 2026, arriving compliant is the only path that carries reimbursement protection.
| Format | How it fails in the network | Our prep answer |
|---|---|---|
| Flip-cap bottles | Caps pop under stacking load | Cap-click check, sealed bag per unit |
| Pump bottles | Pumps depress or unscrew in transit | Pump locked/collared, bagged upright |
| Tubes & sachets | Crimp seams split at corners | Crimp inspection, bag, gentle cartoning |
| Salon liters | Shoulders crush, seams burst under weight | Dividers, upright orientation, box weight limits |
| Dated treatments | Stranded at intake for unreadable dates | Lot date audit + compliant expiry labels |
| Aerosol / pressurized | Restricted — can strand or worse | Case-by-case review before shipping; often declined |
Caps torqued, flip-tops clicked, pumps locked, induction seals present — checked at intake and again at the bagging station.
Every bottle sealed in a suffocation-warning poly bag sized to the unit — specs live on our poly bagging page.
Matched-variant shampoo and conditioner sets banded or bagged as one FNSKU, sold-as-set marked — via our bundling service.
Dated masks and actives audited per lot, expiry labels applied in Amazon's accepted format — see expiration labeling.
Rebranded lines and renamed scents get old codes removed and new FNSKUs applied without tearing sleeve artwork.
Professional sizes cartoned upright with dividers and weight-limited boxes, so dense bottles stop destroying each other.
Cartons counted against the PO and screened for leak evidence — damp board and slicked bottles get flagged with photos on day one.
Caps, pumps, crimps and seals verified unit by unit; dated lots get their expiration audit in the same pass.
Singles bagged; duos and sets assembled from matched variants and sealed as one unit before labeling.
FNSKU and any date labels applied and scan-verified, cartons packed to weight limits, carrier hand-off inside 24–48 hours.
Classic unbagged-liquid contagion. We quarantine, clean and re-screen what's salvageable, document the loss for your claim — and from then on every bottle travels sealed in its own bag.
Variant drift in a multipack build. Our duo line verifies both components against the listing spec before sealing — mismatches get caught at the bench, not in your reviews.
Coded or missing dates strand dated goods at intake. We audit the lot, apply readable expiration labels in the accepted format, and screen every future lot before it leaves here.
Maybe, maybe not: pressurized formats are restricted territory and we don't handle hazmat-classified goods. Send the spec sheet first — the case-by-case review is free and beats a rejected pallet.
Nearly everything in hair care is a liquid, cream or paste, so the baseline is the same for most SKUs: verify the cap and inner seal, bag each unit in a sealed poly bag with a suffocation warning so a leak can't spread, apply the FNSKU where it scans cleanly, and add an expiration label when the product is dated. Multipacks — shampoo-and-conditioner duos above all — get built and sealed as single units before any of that labeling happens.
If the contents can escape, Amazon expects containment — and hair products escape through flip-caps that pop and pumps that depress under stacking pressure. A sealed bag around each bottle means one failed cap ruins one label, not a tote of mixed inventory. For bottles with proven-tight closures and induction seals we still bag by default, because inside Amazon's network your product gets handled more times than you'd guess.
Duo and trio multipacks are the bread and butter of hair-care prep here. We pull matched variants — same scent line, same size — band or bag them as one unit, apply a single FNSKU plus sold-as-set marking, and check that the pack contents match what your listing photo promises. The physical build method is covered on our bundling service page; the hair-care detail is variant discipline, because a mint shampoo paired with a coconut conditioner becomes a return.
Three ways. At intake we look for wet cartons and slicked bottles — evidence the leak already happened in transit. On the bench we check caps are seated and torqued, flip-tops fully clicked, and pumps locked down. And any unit with product residue on the outside gets wiped, re-inspected and re-checked before bagging, or pulled if the closure itself is failing. Leak evidence is photographed the day we find it.
Many do — treatments, masks, and anything marketed with active ingredients typically carry a shelf life, and Amazon requires dated goods to show a readable expiration date and enough remaining life to be accepted. We audit each lot's markings at intake, apply compliant date labels where the printed date is missing or coded, and flag lots running close to the acceptance window before we prep them. Our expiration-date labeling page covers formats and placement.
Pressurized and aerosol formats sit in territory Amazon restricts, and we don't handle goods classified as hazardous materials. So the honest answer is: restricted formats are reviewed case by case before you ship anything to us. Pump sprays and non-pressurized misters are generally ordinary liquid prep; true aerosols usually are not something we can take. Ask first — it costs nothing and prevents a stranded pallet.
Liter bottles and backbar sizes are heavier, so the failure mode shifts from popped caps to crushed shoulders and split seams. We bag individually, orient bottles upright in cartons, respect weight limits per box, and case-pack so liters don't ride on top of retail sizes. Heavy-bottle cartons also get dividers where the units would otherwise grind against each other in transit.
They're separated immediately so leakage can't wick into clean stock — a single split conditioner bottle can stain a full carton of labels. Damaged counts, photos and lot numbers go to you the same day for your carrier or supplier claim, salvageable units get cleaned and re-screened, and the sellable balance continues through prep without waiting on the paperwork.
Yes — rebrands, renamed scent lines and variant consolidations all mean existing stock needs new FNSKUs. We pull affected inventory, strip or cover old labels cleanly without damaging shrink sleeves, apply the new codes and verify every unit scans against the right listing. The relabeling service page describes the general workflow; on hair products the care point is sleeve-printed bottles, where labels must lift without tearing the artwork.
Use the form to tell us your formats — bottle sizes, jars, tubes, any duo packs — plus monthly units and whether products are dated. Pricing is per unit with no setup fee or monthly minimum, and you'll have the rate sheet within one business day. If your line includes any spray or pressurized formats, mention them so the case-by-case review happens before your first shipment.
Tell us your formats, sizes and monthly volume — and mention any duo packs or spray products up front. Per-unit rates and a prep plan land in your inbox within one business day.