How does a perfume store in the GCC get repeat customers?
By reaching the customer at the moment the first purchase runs out, through a channel that does not charge per message. Almost every store has the timing data and spends the reach budget anyway.
The mechanics of a second order
Work out the median gap between first and second order. Whatever that number is, the reminder belongs slightly before it — after it, the customer has already solved the problem somewhere else.
Winning a customer costs money and selling to them again costs almost nothing, and most budgets are spent as though the reverse were true. For a perfume store in the GCC, the answer turns on one thing in particular: Bought as a gift as often as for the buyer, which makes the seasonal peaks sharper than most categories.
What is different about the GCC
The GCC is not one market. Payment habits, delivery norms and language expectations differ enough that a single approach underperforms in at least one country.
Payment preference varies by country more than most planning assumes.
What is different about a perfume store
Discounting to grow trains people to wait for the discount. It works once.
Where a mobile app comes into it
Gifting peaks reward a channel you can reach without paying — the week before Eid is not the week to be bidding on ads.