Selling online
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Skincare is bought online more than almost any category it competes with, and the constraints are regulatory as much as logistical.
Where this category actually sells
Online, and mostly on the strength of what is written rather than what is seen. A customer cannot feel the texture or smell it, so the product page does the work a sample would do in person.
That is a disadvantage for texture and an advantage for the technical part of this craft: the ingredient list, the concentration, the pH, the reason for the packaging. Those are the things a well-run small brand can say and a large one usually will not.
What the product page has to carry
The full ingredient declaration in INCI. The size. The period after opening. What the active is and at what level if you are willing to say. And how to store it.
Publishing the full list online is not required in the way it is on the pack, and doing it anyway is the strongest trust signal available to you. It is also what lets somebody with a known sensitivity buy confidently.
Shipping a liquid in glass
Immobilize rather than cushion, seal the closure properly, and consider an inner bag so a weep becomes a wiped bottle rather than a ruined order.
Then think about temperature. A parcel sits in a hot van and on a cold doorstep, which is exactly what freeze-thaw cycling in a stability study is testing for. A product that has not been through those cycles is a product you are shipping on optimism.
Claims are the risk
Everything you publish attaches to the product. A therapeutic claim in a social post, a customer testimonial you repost describing a condition being treated, or a comparison chart implying a medical effect can all move your cosmetic into drug territory.
Audit the whole surface, not just the label, and be particularly careful with reposted customer language, which is where most brands drift across the line without noticing.