Editing Ayumi Hamasaki (section)

===Branded products and endorsements===
Throughout her early career under Avex, Hamasaki promoted products that ranged from electronics ([[Tu-Ka]] cell phones and [[Panasonic]])<ref name="Metropolis" /> to various snack foods.<ref name="Time2">{{cite magazine |last=Takeuchi Cullen |first=Lisa |date=March 25, 2002 |title=Empress of Pop |url=http://www.time.com/time/asia/features/ayumi_hamasaki/cover2.html |url-status=dead |archive-url=https://web.archive.org/web/20071224235041/http://www.time.com/time/asia/features/ayumi_hamasaki/cover2.html |archive-date=December 24, 2007 |access-date=January 26, 2008 |magazine=[[Time (magazine)|Time]] |page=2 |df=mdy}}</ref> Among the products she has advertised on television are the [[Honda]] [[Honda CHF50|Crea]] scooter,<ref>{{cite web |title=A |url=http://www.oricon.co.jp/music/release/d/45106/1/ |url-status=live |archive-url=https://web.archive.org/web/20081201030429/http://www.oricon.co.jp/music/release/d/45106/1/ |archive-date=December 1, 2008 |access-date=November 17, 2008 |publisher=[[Oricon]] |language=ja}}</ref> [[KOSÉ]] cosmetics,<ref name="Time2" /> [[Mister Donut]] donuts,<ref name="Wired">{{cite magazine |last=Lytle |first=J. Mark |date=May 2003 |title=Ayumi Inc |url=https://www.wired.com/wired/archive/11.05/play.html?pg=9 |magazine=[[Wired (magazine)|Wired]] |volume=11 |issue=5}}</ref> and [[Boss Coffee|Boss coffee]].<ref>{{cite web |title=Boss CM |url=http://www.suntory.co.jp/enjoy/cm/log/sd132.html |url-status=live |archive-url=https://web.archive.org/web/20081007055010/http://www.suntory.co.jp/enjoy/cm/log/sd132.html |archive-date=October 7, 2008 |access-date=February 23, 2008 |publisher=[[Suntory Limited]] |language=ja}}</ref> Although Hamasaki initially supported the exploitation of her popularity for commercial purposes, saying that it was "necessary that [she is] viewed as a product",<ref name="TimeInterview2" /> she eventually opposed Avex's decision to market her as a "product rather than a person" from 2004. This began a significant hiatus from lending her name to product advertisements and endorsements.<ref name="NTVinterview">{{cite video |title=Hamasaki Ayumi: The Heartbreak and Decision in Light and Shadow |medium=Television |publisher=[[Nippon Television|NTV]] |year=2004 |location=Japan |people=Ayumi Hamasaki (interviewee)}}</ref>
[[File:Ayu symbol.svg|thumb|Hamasaki's "A" logo]]
In 2001, Hamasaki launched her own limited-run fashion brand, MTRLG (Material Girl); the clothes were sold at MTRLG boutiques and at Mise S*clusive stores.<ref name="NEP">{{cite news|last=Chang |first=Miharu |title=Ayumi Spells Big Bucks |work=[[The New Paper|The Electric New Paper]] |publisher=[[Singapore Press Holdings]] |location=Singapore |date=October 3, 2003 |url=http://newpaper.asia1.com.sg/hey/story/0,4136,37008,00.html |archive-url=https://web.archive.org/web/20031003064701/http://newpaper.asia1.com.sg/hey/story/0%2C4136%2C37008%2C00.html |archive-date=October 3, 2003 |access-date=February 5, 2009 |url-status=dead }}</ref> In 2002, Hamasaki created Ayupan, a cartoon version of herself that appeared in a line of merchandise (mainly figurines), and in a 2003 animation. For her 2007 tour ''Tour of Secret'', Hamasaki collaborated with [[Sanrio]] to create a line of merchandise, "Ayumi Hamasaki x Hello Kitty".<ref>{{cite web |date=March 9, 2007 |title=Ayumi Hamasaki x Hello Kitty Collaboration: The Dream Is Realized! |url=http://www.oricon.co.jp/news/music/42797/ |url-status=live |archive-url=https://web.archive.org/web/20081207173630/http://www.oricon.co.jp/news/music/42797/ |archive-date=December 7, 2008 |access-date=November 17, 2008 |publisher=[[Oricon]] |language=ja}}</ref> The merchandise included cell phone straps and [[Lumix]] cameras decorated with a picture of [[Hello Kitty]] behind Hamasaki's "A" logo;<ref group="fn">This is the symbol: [[File:Ayumi_Hamasaki_A_Logo.png]]. It is used either as a substitute for the letter ''a'' or to represent Hamasaki's name. The titles of six albums, ''Rainbow'', ''A Best'', ''A Ballads'', ''A Best 2 -White-'', ''A Best 2 -Black-'', and ''A Complete'' use this symbol; the titles of these albums appearing as ''R[[File:Ayumi_Hamasaki_A_Logo.png]]INBOW'', ''[[File:Ayumi_Hamasaki_A_Logo.png]] Best'', ''[[File:Ayumi_Hamasaki_A_Logo.png]] Ballads'', ''[[File:Ayumi_Hamasaki_A_Logo.png]] Best 2 -White-'', ''[[File:Ayumi_Hamasaki_A_Logo.png]] Best 2 -Black-'', and ''[[File:Ayumi_Hamasaki_A_Logo.png]] Complete''. (Dashes are commonly used in Japanese script to enclose subtitles.)</ref> the former product was a result of a collaboration with Sanrio and Japanese fashion brand Ash & Diamonds, the latter a collaboration with Sanrio and Panasonic.<ref>{{cite news |title=Ayumi Hamasaki Collaboration is a Dream! |language=ja |work=Barks.jp |publisher=ITmedia |url=http://www.barks.jp/news/?id=1000031701 |access-date=July 23, 2008 |archive-date=March 15, 2008 |archive-url=https://web.archive.org/web/20080315034906/http://www.barks.jp/news/?id=1000031701 |url-status=live }}</ref>

In August 2019, author Narumi Komatsu released a novel about the early years of Hamasaki's career: ''[[M Aisubeki Hito ga Ite]].'' The book included a written endorsement from the artist as a part of its introduction. On social media, Hamasaki stated that the book "combined both fact and fiction" and had become its own story. A [[M Aisubeki Hito ga Ite#TV drama|television drama-series]] based on the novel aired from April to July 2020.<ref>{{cite web |date=August 28, 2019 |script-title=ja:浜崎あゆみ自伝的小説」が早くもドラマ化決定 ｛｛2019 |url=https://www.excite.co.jp/news/article/Tablo_tablo_14776/ |url-status=live |archive-url=https://web.archive.org/web/20190828143858/https://www.excite.co.jp/news/article/Tablo_tablo_14776/ |archive-date=August 28, 2019 |access-date=August 28, 2019 |work=Excite News Japan}}</ref>

In March 2023, Hamasaki became a beauty brand ambassador for Rhythm Co., representing their R-Face BFT Pack product.<ref>{{Cite web |date=March 28, 2023 |title=浜崎あゆみ「庭にサウナと水風呂」 8年ぶり記者会見でプライベートな一面明かす |url=https://www.oricon.co.jp/news/2273127/full/ |url-status=live |archive-url=https://web.archive.org/web/20230328131911/https://www.oricon.co.jp/news/2273127/full/ |archive-date=March 28, 2023 |access-date=2023-03-28 |website=ORICON NEWS}}</ref> The packaging included Hamasaki's signature "A" logo, and advertisements used "[[Remember You (Ayumi Hamasaki album)|Mask]]" as the official collaboration theme. On October 2, Hamasaki was announced as a brand ambassador for Gem Castle, "[[Dearest (Ayumi Hamasaki song)|Dearest]]" being used throughout their 45th anniversary campaign.<ref>{{Cite web |title=浜崎あゆみ、総額128億円を超える超豪華ジュエリーを身にまとった新CM完成 |url=https://www.thefirsttimes.jp/news/0000332452/ |url-status=live |archive-url=https://web.archive.org/web/20240816144053/https://www.thefirsttimes.jp/news/0000332452/ |archive-date=August 16, 2024 |access-date=2023-12-07 |website=THE FIRST TIMES |language=ja}}</ref>

In December 2024, Hamasaki announced an official collaboration with the [[Sailor Moon]] brand. Merchandise featured an illustration by [[Naoko Takeuchi]] of Ayu and titular character [[Usagi Tsukino|Usagi]].<ref>{{Cite web |last=KAI-YOU |date=2024-12-20 |title=浜崎あゆみ×『セーラームーン』 竹内直子が描き下ろしイラストを公開 ｜ KAI-YOU |url=https://nordot.app/1242708286325113059?c=1179248089549373591 |access-date=2024-12-20 |website=KAI-YOU |language=ja-JP}}</ref> On the same day, the artist also launched her second design line with Sanrio: "Ayupan x [[My Melody (character)|My Melody]]".<ref>{{Cite web |title=ayu×My Melodyのコラボグッズが発売決定！！ |url=https://avex.jp/ayu/goods/detail.php?id=1002447 |access-date=2024-12-20 |website=ayu×My Melodyのコラボグッズが発売決定！！ |language=ja}}</ref>