Radha is an aspiring perfumer working at the prestigious House of Yves in Paris. She works to maintain her roles as a Parisian wife and a mother to two young daughters while aggressively pursuing her professional ambitions. Internally, she suppresses painful memories of her childhood in India, specifically regarding a teenage pregnancy that resulted in a son she surrendered for adoption. Her dedication to her career frequently causes friction in her traditional marriage.

Lakshmi is Radha's older sister and a former henna artist who now runs a successful herbal medicine business in Shimla, India. She provides a vital connection to Radha's Indian heritage and serves as a supportive confidante. Having escaped an abusive marriage in her youth, Lakshmi understands the importance of independence and self-reliance. She maintains a polite, composed demeanor that contrasts with Radha's occasional impatience.

Pierre is Radha's husband and an ambitious architect working in Paris. He prefers a traditional household dynamic and frequently expects his wife to prioritize her domestic duties over her apprenticeship at the perfumery. He actively participates in raising his daughters but struggles to understand or support Radha's deep emotional connection to her work.

Delphine is the enigmatic, chain-smoking master perfumer at the House of Yves. She demands excellence from her staff and carefully observes the dynamics within her laboratory. As a woman who has cemented her authority in a male-dominated industry, she acts as a strict but fair professional mentor to Radha, advising her to trust her instincts and never apologize for her talent.

Niki is a seventeen-year-old boy raised in India by his adoptive parents. He is Radha's biological son, born from an early affair in Jaipur, and his existence remains a carefully guarded secret from Radha's Parisian family. He possesses a strong interest in art and travels to France hoping to uncover information about a mysterious scholarship benefactor and his biological mother.

Florence is Pierre's mother and a proud Francophile living in Paris. She frequently offers to care for her granddaughters, Shanti and Asha, and attempts to share her love of French culture with them. Because she carries her own buried insecurities and a deep sense of loneliness, her attempts to help are often misinterpreted by Radha as overbearing criticism.

Mathilde is Radha's glamorous, worldly best friend from their early school days. She carries the heavy burden of serving as the primary caregiver for her neglectful mother, who suffers from dementia. She relies on Radha for emotional support, though their friendship experiences strain due to Radha's demanding schedule and hidden past.

Sheela is an elegant, wealthy woman from Radha's past in Jaipur. She is married to the corrupt Ravi Singh and carries the quiet burden of his unfaithfulness. She possesses a keen business sense and seeks to establish her independence away from her husband's family influence.

Ferdinand is a laboratory assistant at the House of Yves and the nephew of the perfumery's proprietor. He brings a vibrant, fun-loving energy to the workplace, frequently humming disco hits and offering friendly encouragement. Accustomed to wealth and privilege, he uses his charm to build trust with his colleagues.

Havi is a shrewd businesswoman and courtesan who operates a haveli and an open-air perfume factory in Agra. Alongside her sister Nasreen, she works to uplift young women by teaching them classical arts and providing a safe haven. She serves as a keeper of traditional Indian botanical knowledge and previously sheltered Lakshmi during a time of need.

Shanti is Radha and Pierre's older daughter. She occasionally acts out aggressively at school and at home, expressing her frustration over experiencing prejudice and sensing the growing tension between her parents.

Asha is Radha and Pierre's younger daughter. She closely observes the escalating tensions in her household and relies heavily on her older sister for guidance and protection at school.

Nasreen is a courtesan in Agra and Havi's sister. She helps manage the daily operations of their haveli, striving to maintain its elegance and provide a sanctuary for women despite a shrinking traditional clientele in modern India.

Kanta is Niki's adoptive mother in India. She diligently sends Radha letters and photographs to document the boy's upbringing, wanting to maintain a connection despite Radha's insistence on detachment.

Manu is Kanta's husband and Niki's adoptive father. He provides a stable, caring home for the boy in India and supports Kanta in managing the complications surrounding Niki's biological family.

Michel is a serious, focused chemist at the House of Yves. He possesses more formal education than Radha and maintains a cold, professional demeanor in the laboratory, leading her to occasionally view him with suspicion.

Céleste is the secretary at the House of Yves. She monitors the daily schedules and interpersonal dynamics of the perfumery staff, acting as a crucial line of communication within the office.

Ravi is a wealthy man from a corrupt family in Jaipur who took advantage of Radha during her youth. He is Niki's biological father and currently maintains a strained marriage with Sheela.

Malik is Lakshmi's cousin and adopted son. He lives near her in Shimla and assists with errands and family matters, providing steady support to the women in his family.

Gérard is a friendly museum guard at the Louvre who lost his right hand to disease. He shares detailed historical insights about artists and models with Radha during her research visits, offering a sympathetic ear to her struggles.

Yves is the proprietor of the high-end Parisian perfumery where Radha works. He holds high expectations for his business and maintains a soft spot for his nephew, Ferdinand, leading him to overlook the young man's lack of discipline.

Binu is a young kitchen girl at Havi's haveli in Agra. She harbors dreams of achieving an education and upward mobility while assisting with the daily chores of the estate.

Rajkumar is a traditional perfume merchant in Agra. He takes immense pride in India's ancient botanical practices and dismisses Western fragrance techniques as derivative.

Antoine is a deceased perfumer who originally recognized Radha's talent. He mentored her in the foundational skills of scent blending and helped launch her career before his passing.

Nimmi is Malik's wife. She lives with him in Shimla and remains a close, integrated part of Lakshmi's extended family network.

Hari is Lakshmi's former husband. He now operates a market stall in Agra, having reformed from his past abusive behavior to establish an easy, polite understanding with his ex-wife.

Yasmin is the former nanny to Shanti and Asha. Her harsh, prejudiced comments about skin tone prompt an aggressive reaction from Shanti, leading to Yasmin's resignation.