Can a simple face injection boost Well-Being after breast cancer?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Women ≥ 18 years old and ≤ 50 years old. 2. Non-menopausal status at time of diagnosis of breast cancer (self-reporting). 3. Patient with breast cancer (uni or bilateral): 1. treated at the Institut Bergonié by chemotherapy (+/- targeted/immunotherapy) and surgical treatment (conservative or not) and/or hormone therapy and/or radiotherapy 2. who completed their treatment at least 6 months ago including end of treatment with Herceptin but with the exception for ongoing hormone therapy 3. in complete remission 4. Non-immunosuppressed patient. 5. Voluntarily signed and dated written informed consent prior to any study specific procedure. 6. Patient affiliated to a social security in compliance with Article 1121-11 of the French Public Health Code. Exclusion Criteria: 1. Patients with a history of or declared autoimmune disease or immune system deficiency or undergoing immunosuppressive treatment. A 6-month washout is required. 2. Patients undergoing or planning to undergo peeling treatment or laser/ultrasound-based or botox treatment or hyaluronic acid injections during the study or having had one of these treatments in the 6 months preceding the study. 3. Patients showing cutaneous disorders, inflammation or infection (acne, herpes labialis, scars…) at the treatment site or near to this site. 4. Patients having a known hypersensibility to lidocaine and/or amide local anaesthetic agents or hyaluronic acid and/or proteins from gram-positive bacteria, or with a history of severe allergy or anaphylactic shock. 5. Patients with a history of streptococcal disease (recurrent sore throat, rheumatic fever) 6. Patients with autoimmune or cardiac diseases (i.e. heart conduction disorders) and/or undergoing treatment for heart diseases (beta-blockers). 7. Patients with hepatocellular insufficiency and/or undergoing treatment for liver disease. 8. Patients suffering from epilepsy not controlled by a treatment or porphyria. 9. Patients with a tendency to develop hypertrophic scars. 10. Patients with severe, ongoing and/or uncontrolled disease that may pose a health risk to the patient during the study and/or may have an impact on the study assessments. 11. Patients receiving or planning to receive high dose Vitamin E, aspirin, anti-inflammatories, or anti-coagulant during the week preceding each injection 12. Patients receiving any long-term medical treatment or any treatment that, in the opinion of the clinical investigator, may interfere with test results or put the patient at undue risk. 13. Patients under guardianship/tutorship. 14. Pregnant women or breastfeeding mothers.