De Jager first began uploading videos to
YouTube in 2008, at the age of 14, after watching
MTV's
The Hills while sick and being inspired by
Lauren Conrad's makeup. She then began searching YouTube for tutorials to recreate the look and was inspired to begin creating her own. After uploading videos for about two years, she enrolled in makeup coursework at B Academy in
Amsterdam. She then signed to Colourfool Agency in 2011, and began working as a professional makeup artist. De Jager left Colourfool Agency at the beginning of 2014 to work as a
freelance hair and makeup artist. In 2017, she also won the award for "YouTube Guru" at the
Shorty Awards and the award for "Choice Fashion/Beauty Web Star" at the
Teen Choice Awards. In 2017, De Jager uploaded a video reviewing a foundation produced by a Prague-based cosmetics brand and spoke about the company using her image, specifically a
screenshot from her "The Power of Makeup" video, to sell their products on
social media without her permission. She expressed disappointment in the company's actions, feeling they had lied to their followers as she was not wearing any of their products in the photo of her they had used to promote their company. In January 2019, it was announced that De Jager would serve as the Global Beauty Adviser for
Marc Jacobs Beauty. The brand stated in a press release that "in this newly created role, Nikkie will be integrated into the brand’s product development process, as well as share her incredible talent and expertise to expand unique content and artistry around the world on both Marc Jacobs Beauty and her own channels." On 12 June 2020, it was announced that De Jager would become a
goodwill ambassador at the
United Nations. On 23 September 2021, De Jager launched her cosmetic brand, Nimya, after having developed it for three years. The brand featured three products upon launch: Moisturizer/Primer Hybrid, Setting Spray, and Cooling Ice Stick and glow Serum, as well as a minifan to go with the products.
Collaborations De Jager has collaborated with beauty brands like OFRA Cosmetics and
Maybelline. Her line with OFRA Cosmetics in 2017 included liquid lipsticks and a highlighter palette. In August 2020, De Jager launched her own eyeshadow palette in collaboration with the brand Beauty Bay. == Personal life ==