Best miles/cashback credit card for ladies who spend on beauty stuff like Aesthetics treatment, Facials, Massage?

You will have to check with the salon on its MCC.

For general cards, consider Citi PremierMiles at 1.2 miles per dollar. For stacks in $5, consider UOB PRIV Miles @ 1.4 miles per dollar.

For shopping and entertainment, consider OCBC 90°N CARD @ 4 miles per dollar.

Here is everything about me and what I do best.

UOB One card-- Top Up to Grabpay-- Use Grabpay Mastercard option to top up to youtrip/revoult then use these cards to pay. It is the latest hack to use

8-10% rebate. But please take note of the UOB One card spending requirements to hit the cash rebates

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If you are cosnidering airmiles, UOB Lady's card is good because it offers 4 miles per dollar to a specific category in your case your purchases are of a specific category​​​

If these can be paid via contactless payments, you could consider UOB preferred platinum. Although you can earn 4mpd on such transactions, this is capped at $1,110 per month so it may not sufficiently cover all of your payments.

But this is a definite good way of maximising all miles for this purchases.

DBS Womans & UOB Lady's.

Citibank Cashback card is not bad too