| 1968 Sep | Nobuo Nemoto, Kunihiko Hirakawa, and Haruo Ookita founded Aderans in Shinjuku, Tokyo. |
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| 1969 Mar | Aderans Co., Ltd. was incorporated with a capital of 2,000,000 yen. (Company President Masaru
Nemoto) The company began advertising in men's weekly magazines and sports newspapers. |
| 1970 Mar | Nobuo Nemoto was appointed as President. |
| 1972 | Aderans launched its first television commercial. |
| 1974 Jan | Released the "AS-1" wig featuring artificial skin technology. |
| 1976 Oct | Introduced the "AQ-15," a "one-touch" wig product. |
| 1978 | Launched the "Love Charity" initiative. |
| 1979 Feb | Introduced the "Fitter," a tool for measuring head size for wig fitting. |
| Jul | Established its first overseas subsidiary, Aderans Corporation of America, in the United States (dissolved in 1994) |
| 1980 Aug | Held the first National Skills Competition. |
| 1981 Apr | Established Aderans Kogei Co., Ltd. (merged in September 1996). |
| 1983 Oct | Began research and development of synthetic hair fibers. |
| 1985 Feb | Arden Planning Co., Ltd. joined the Aderans group (merged with Nakajo Golf Club Co., Ltd. in September 2001). |
| May | Established ADE Co., Ltd. (business transferred to Palmesse in 2006 and dissolved). |
| Jun | Launched advertising for Ladies' Aderans. |
| Aug | Fontaine Co., Ltd. joined the Aderans group. |
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| 1986 Oct | Established Aderans Thai Ltd. in Thailand. |
| 1987 Jan | Listed on the Second Section of the Tokyo Stock Exchange (capital: ¥7.088 billion). |
| Mar | Launched hair growth business. |
| May | Haruo Ookita was appointed Representative Director. |
| Jun | International Hairgoods Inc. in the United States (now Aderans Hair Goods, Inc.) joined the Aderans group. |
| 1988 Dec | Listed on the Second Section of the Osaka Stock Exchange. |
| 1989 Mar | Rene of Paris (now Aderans Hair Goods, Inc.) joined the Aderans group. |
| 1990 Jan | Aderans Taiwan established. |
| Apr | Began expanding women-only salons. |
| 1991 Mar | Released the "Cyber Hair" synthetic hair product. |
| Jun | Palmesse Co., Ltd. established for mail-order sales of Fontaine products. |
| 1992 Jan | Aderans Europe B.V. established. |
| Mar | Gesmofra S.A. (absorbed by Aderans France SAS in 2007), Camaflex Societe Europeenne de Distribution S.A. (CXF) (absorbed by Aderans France SAS in 2015), Monfair Mode S.A.R. L (merged into CXF in 2010), Creations de Paris Camaflex Vertriebs GmbH. (now Aderans Germany GmbH), Monfair Moden Vertriebs GmbH. (now Aderans Germany GmbH) and Camaflex S.A. (now Aderans Benelux B.V.) joined the Aderans group. |
| Sep | World Quality Co established in Thailand. |
| 1994 Mar | D. van Nooijen B.V. (now Aderans Benelux B.V.) joined the Aderans group. |
| Nov | Aderans Holding Co (Now the Aderans America Holding, Inc.) established. |
| Dec | Fontaine Co stock registered to the Japan Securities Dealers Association. |
| 1995 May | Nobuo Nemoto was appointed Chairman, and Takayoshi Okamoto was appointed Representative Director. |
| 1996 May | Simpli Craft Co established in Thailand (dissolved in 2008). |
| 1997 May | Aderans Siam established in Thailand (dissolved in 2010). |
| Aug | Listed on the First Section of both the Tokyo and Osaka Stock Exchanges (capital: ¥12.276 billion). |
| Oct | Monfea Moden acquired the business rights of Wittmann, Weiss & Bauer GmbH. |
| 1998 Mar | New Concepts Hair Goods, Inc. (now Aderans Hair Goods, Inc.) joined the Aderans group. |
| Sep | General Wig Manufacturers, Inc. (now Aderans Hair Goods, Inc.) joined the Aderans group. |
| Nov | Fontaine was listed on the Second Section of the Tokyo Stock Exchange. |
| 1999 Sep | World Quality Co and Aderans Thai obtained ISO-9001-14001. |
| 2000 May | Aderans Korea established (dissolved in November 2019). |
| 2001 Apr | ADN Co., Ltd. was established through the . merger of Nakajo Golf Club Co., Ltd. and Aderans Planning Co., Ltd. (dissolved in 2011). |
| Aug | Bosley Medical Institute Inc. (now Bosley Inc.), Sterling Accommodations, Inc. (dissolved in 2014), and Bosley Medical Institute of Canada, Inc. joined the Aderans group. |
| Dec | Japanese Conference of Hair Business (Nihon Mouhatsugyo Kyougikai or NMK) established, and Aderans Co., Ltd. became its member. |
| 2002 Jan | Aderans Philippines,Inc., a production facility, established. |
| May | Trend Hair Supplies Co., Ltd. (now Aderans UK Ltd.) joined the Aderans group. |
| Jun | Aderans Research Institute, Inc. established in the United States. |
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| 2003 Dec | Fontaine Co., Ltd. became a wholly owned subsidiary. |
| 2004 Feb | Takayoshi Okamoto was appointed Chairman and CEO, and Katsuji Tokumaru was appointed Representative Director and COO. |
| 2005 Jan | Carl M Lundh AB in Sweden joined the Aderans group (now Aderans Sweden AB). |
| Dec | Aderans (Shanghai) Company, Ltd. established (divested in 2023). |
| 2006 Mar | Released the "Vital Hair" synthetic hair product. |
| Jul | Aderans (Shanghai) Trading Co., Ltd. established (dissolved in 2023). |
| Oct | Aderans Malaysia Sdn Bhd established (dissolved in 2013). |
| 2007 Mar | Bosley International Holdings, LCC established. |
| Jul | Aderans Medical Holdings, Inc. established in the United States. |
| Aug | Medical Hair Restoration, Inc. in the United States joined the Aderans group under Aderans Medical Holdings, Inc. |
| Sep | Due to a spin-off, Takayoshi Okamoto was appointed Representative Director of Aderans Holdings Co., Ltd. (formerly Aderans Co., Ltd.), and Katsuji Tokumaru was appointed Representative Director of the newly established Aderans Co., Ltd. |
| 2008 Aug | Kiyoshi Hayakawa was appointed Representative Director of Aderans Holdings Co., Ltd. |
| 2009 Jun | Nobuo Watabe was appointed Representative Director of Aderans Holdings Co., Ltd. |
| Jul | Began the "Fontaine Green Forest Campaign." |
| Nov | Aderans Hair Goods, Inc. established in the United States. |
| Dec | Tadao Otsuki was appointed Representative Director and COO of Aderans Holdings Co., Ltd. |
| 2010 May | Tadao Otsuki was appointed Representative Director and CEO of Aderans Holdings Co., Ltd.. |
| Sep | Aderans Holdings Co., Ltd. merged with Aderans Co., Ltd. and Fontaine Co., Ltd., and changed its name to UniHair Co., Ltd. |
| 2011 Feb | Nobuo Nemoto was appointed Chairman and Representative Director of UniHair Co., Ltd. |
| Jul | Unihair changed the company name to Aderans Co., Ltd. |
| 2012 Aug | BosHC Co. established as a holding company in the United States. |
| Sep | Le Nouvel Espace Beauté SAS in France joined the Aderans group (dissolved in 2024). |
| 2013 Apr | HC(USA), Inc. in the United States joined the Aderans group. |
| 2014 May | Aderans Lao Co., Ltd. established in Laos (dissolved in 2022). |
| 2016 Jul | Reizvoll Co., Ltd joined the Aderans group. |
| Oct | Hi-net Co., Ltd. joined the Aderans group (absorbed by Aderans Co., Ltd. in 2023). |
| 2017 Jan | Held the Fontaine National Customer Service and Wig Styling competition. |
| Feb | Stock delisted. |
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| Apr | Aderans Hong Kong Ltd. established. |
| Nov | Lao Quality Sole Co., Ltd. in Laos joined the Aderans group. |
| 2018 Feb | Aderans Total Hair Solution Iberia S.L. established in Spain. |
| Apr | Held the 50th anniversary commemorative ceremony. |
| Aug | Amekor Industries, Inc. and Estetica Designs, Inc. in the United States joined the Aderans group (divested in 2024). |
| Sep | Aderans Total Hair Solution (Thailand) Co., Ltd. established. |
| 2019 Sep | The London Hair Clinic Ltd. in the UK joined the Aderans group. |
| Nov | Aderans Korea, Inc. established (dissolved in 2024). |
| 2021 Mar | Aderans BIO Co., Ltd. established (divested in 2024). |
| Nov | In Vogue, LLC. in the United States joined the Aderans group. |
| 2022 Jan | Capital was reduced to ¥100 million. |
| May | HairClub Canada Corporation established. |
| Oct | Released the functional synthetic hair product "CYBER X." |
| 2024 May | Hiromasa Suzuki was appointed Group CEO, Representative Director. |
