Only use vendors that provide "Chain of Custody" or "Proof of Purchase" to avoid counterfeits.
Purchasing at international airports can save 15–20%.
If a website offers "70% off" on current best-sellers (like Ruby Woo or Studio Fix), it is likely a scam.
MAC does not typically authorize small third-party boutiques.
Selection is usually limited to discontinued shades or older packaging.
While there are per-item limits, this is the official way to stock a professional kit.