The purpose of the study is to explore the effect of nature-based exposure on immunological biomarkers and the condition and symptoms of atopic skin. Our hypothesis is that regular exposure to nature-based, high biodiversity material on skin, strengthens the skin's protective barrier and has a positive effect on the immunological biomarkers associated with atopic dermatitis. Further our hypothesis is that the difference between the groups (active and placebo) is noticeable during winter time when the disease is typically worse because of the cold weather. The study aim at scientific publication and is double-blinded and placebo-controlled. Time of the intervention is 6-7 months: intervention starts before the Finnish winter time and ends before the summer.

Inclusion Criteria:

• A person aged 18-65, legally competent
• Meets Hanifin & Rajka's criteria for atopic dermatitis in the initial interview and eczema has also appeared regularly in adulthood
• The possibility to commit to the research

Exclusion Criteria:

• Cancer or cancer treatments
• Medication that suppresses the immune system (excluding antihistamines)
• Systemic medicine intended for the treatment of atopic dermatitis (orally or as an injection, other than an antihistamine) or the use of clinical phototherapy in the last 6 months.
• Skin infection (such as a eczema that required antibiotic cream or a parasitic infection, e.g.scabies mite) during the last 6 months
• Atopic dermatitis that required hospitalization in the last 2 years
• Psoriasis or other skin disease affecting the study in addition to atopy
• Pregnancy or breastfeeding

Participants are randomized to groups by external statistician. Test lotions are looking the same so participants and investigators don't know in which group they are.