Count: 0 — No makeup brands that start with X meet the verification criteria for this A–Z reference. The A–Z list requires independent, verifiable coverage such as official sites, company filings, or reputable trade press, and no globally or regionally notable cosmetics houses begin with the letter X. Note that X is an uncommon initial for brand names in many languages; it more often appears inside names, in product lines, or as a stylized logo element rather than as the leading letter.

Understand the reasons for this absence: X is phonetically and linguistically rare as a first letter across major naming traditions, and cosmetics branding favors pronounceable, familiar initials that reinforce recognition. Expect to find X used in collaborations, product names, or stylized marks rather than as the official first character of a company name, and observe that small indie or local labels that might start with X often lack the independent coverage required for inclusion. Check adjacent letters or look for brands that include an X within their name, use X in product lines, or appear with X when romanized from non-Latin scripts as practical alternatives.