How does a beauty and cosmetics store in the UAE 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 beauty and cosmetics store in the UAE, the answer turns on one thing in particular: Beauty is bought again on a schedule — a serum runs out — so the second purchase is predictable in a way most categories are not.
What is different about the UAE
Delivery expectations in the UAE are set by same-day services, so five-day shipping reads as slow whatever the price.
Card payment is the norm in the UAE, with cash on delivery still expected by a meaningful minority.
What is different about a beauty and cosmetics store
Discounting to grow trains people to wait for the discount. It works once.
Where a mobile app comes into it
A category bought monthly is the strongest case there is for an app: reordering in two taps rather than five.