Heat and sunlight
Warm dwell can affect color, odeur, and brand confidence, especially when parcels sit in vehicles, casiers, or doorsteps.
Vitamin C serum parcels need heat control, protection contre la lumière, and careful bottle support. The goal is to reduce summer heat exposure without causing freeze contact, étiquettes humides, cap leakage, or glass-bottle movement.
For cosmetic cold-chain delivery, the best package is the one that protects both formula condition and customer-facing presentation. The packout below gives a practical starting point before lane testing.
Warm dwell can affect color, odeur, and brand confidence, especially when parcels sit in vehicles, casiers, or doorsteps.
A cold pack placed too close to the retail carton can wet labels and printed boxes even when product temperature looks acceptable.
Glass bottles and droppers need center-cavity support so the product does not rattle, chip, or press into a gel pack.
| État de l'itinéraire | Intention de température | Packaging setup | Preliminary coolant range | Réception du chèque |
|---|---|---|---|---|
| Local courier, 4-8 h | Cool protection against heat; follow label storage instructions if chilled handling is required. | Insulated mailer or small insulated carton, bottle sleeve, 1-2 small conditioned gel packs or PCM with spacer board. | À propos 0.3-0.7 kg for a 0.5-2 kg serum payload. | Bottle movement, cap seal, label dryness, and warm handoff time. |
| Warm e-commerce route, 8-24 h | Often planned as a cool route such as 8-15 C when the brand needs heat reduction; Évitez le gel. | Insulated carton or compact EPP box, center product cavity, conditioned coolant on side/top positions, corrugated or foam buffer. | À propos 0.7-1.5 kg for a 0.5-3 kg de charge utile. | Température minimale, label moisture, carton crush, and any color or odor concern. |
| Hot route or delay risk, 24-36 h | Use a tested cool or chilled target based on the product label and customer promise. | Isolation plus épaisse, higher PCM or gel-pack mass, product isolated from cold surfaces, optional logger for premium lanes. | À propos 1.5-2.6 kg for a compact shipper; validate before launch. | Courbe de l'enregistreur, remaining coolant state, cap leakage, and product appearance. |
Use these ranges for packaging discussion and sampling. Final coolant mass should be confirmed with the actual formula, nombre d'unités, bottle or jar size, dimensions des cartons, durée de l'itinéraire, conditions ambiantes, and any logger requirement.
Do not freeze or over-chill bottles unless the label and internal quality process allow it. Condition coolant before packout so the product is not shocked by a frozen surface.
Place bottles in a sleeve, plateau, or divider. Keep absorbent or moisture-resistant material between the retail carton and coolant.
Use side and top placement for summer lanes, but keep a physical spacer between the coolant and the bottle or retail box.
Receiving checks should include temperature record if used, label dryness, cap condition, glass movement, and visible color or odor cues.
These are the issues the packout should reduce before the shipment reaches the customer.
Use the test curve as a working comparison, then validate with the actual product, masse de liquide de refroidissement, isolation, durée de l'itinéraire, et assaisonner. For skincare, also check presentation: label dryness, état du carton, cap seal, and product texture.

Use these pages to compare nearby product routes, select coolant, and check route risk before sampling.
Share the storage instruction, nombre d'unités, taille du carton, poids de charge utile, durée de l'itinéraire, conditions ambiantes, delivery handoff, and whether you need a temperature logger. Tempk can help compare gel packs, PCM, PPE, cartons isothermes, couches tampons, et recevoir des chèques.