There are 8 efficacy studies on the DSD de Luxe products in our shop. They were conducted and evaluated by the independent testing laboratories J.S. Hamilton Poland and YIWI Testing & Evaluation (Shanghai), with 20 to 46 participants and 4 to 12 weeks of use. Here you will find all results, grouped by topic.
The combination of 1.3 Dixidox de Luxe Peeling, 3.1 Dixidox de Luxe Intense Shampoo and 3.4.3B Fresh Cells de Luxe Concentrate was used for 12 weeks under dermatological supervision by 25 people (aged 23–68) with hereditary hair loss (androgenetic alopecia). In the trichological examination of 15 participants with increased hair loss, the share of hairs in the resting phase (telogen) fell on average from 20.3 % to 16.8 %, and the share of hairs in the growth phase (anagen) rose from 76.7 % to 81.2 %. In 7 of 10 participants, Visioscan® images showed new hair growth. 92 % of participants reported less hair loss.
−17 %Share of hairs in the resting phase (telogen), avg. 20.3 % → 16.8 %
81.2 %Hairs in the growth phase (anagen), before avg. 76.7 %
Efficacy study: 3.1 Intense Shampoo + 3.4.1 Crexepil de Luxe Forte Lotion
In a study with 46 participants (aged 18–60) with hair loss or other scalp and hair concerns, the combination of 3.1 Dixidox de Luxe Intense Shampoo and 3.4.1 Crexepil de Luxe Forte Lotion reduced hair loss by 31.23%. The share of hairs in the resting phase (telogen) fell by 15.91% and hair diameter increased by 2.61%. 100% of participants were satisfied with the product overall.
−31.23%Hair loss
−15.91%Share of hairs in the resting phase (telogen)
+2.61%Hair diameter
46 people · 14 March – 26 May 2024 · YIWI Testing & Evaluation (Shanghai)
Efficacy study: 3.4.4 Capixyl™ + Placenta Shock de Luxe Lotion
In a 12-week study under dermatological supervision with 20 participants (aged 21–67) with hereditary hair loss (androgenetic alopecia), 90% showed stronger hair and 70% showed less excessive hair loss. In 85% the irritated scalp calmed down, and in 75% the scalp became less oily.
In a study with 46 participants (aged 18–60), DSD de Luxe 9.4 Aminopyrrole + Melatonin Lotion reduced the number of shed hairs by 31.71% after 28 days and by 71.36% after 56 days. Hair diameter increased by 2.71% and the share of hairs in the resting phase (telogen) fell by 15.55%.
−31.71%Shed hairs after 28 days
−71.36%Shed hairs after 56 days
+0.87%Hair diameter after 28 days
46 people · 14 March – 26 May 2024 · YIWI Testing & Evaluation (Shanghai)
In a 56-day study with 21 adults with hair loss, 95% of participants noticed visibly less hair fall after using 9.1 Exogrow Booster Shampoo and 9.4.1 Exogrow Booster Lotion. According to the manufacturer, hair density increased by 19% and hair thickness by 14%; 95% saw a visibly improved scalp condition.
+19%Hair density
+14%Hair thickness
21 adults (18+) with androgenetic alopecia · 56 days · J.S. Hamilton Poland
In an open 12-week observation at specialised clinics in Moscow, 11 people (aged 28–46) with early signs of hereditary hair loss applied DEKOHAIR to the scalp daily. Hair density and hair diameter improved in all participants: in the phototrichogram, density rose by 15% on average and diameter from 48.2 to 58.5 µm; the share of hairs in the resting phase (telogen) fell from 13.5% to 5.8%. In 5 of 11 people, more hair temporarily fell out in the first weeks; this subsided by week 12.
+15%Hair density (185.4 → 212.8 hairs/cm²)
+21%Hair diameter (48.2 → 58.5 µm)
5.8%Hairs in the resting phase (telogen), previously 13.5%
11 people (6 men · 12 weeks · Real Clinic, Moscow (Yu. A. Markova, I. S. Kozyrenko)
In a 28-day study under dermatological supervision with 22 participants (aged 18–65), the combination of 1.3 Dixidox de Luxe Peeling and 2.1 Dixidox de Luxe Antidandruff Shampoo reduced keratin build-up (flakes) on the scalp by 81% and scalp sensitivity by 52%. Participants also reported less itching, more volume and a more comfortable scalp.
−81%Keratin build-up (flakes) on the scalp
+60%Epidermal exfoliation
−52%Scalp sensitivity
22 people · 28 days (± 2 days) · J.S. Hamilton Poland
In a 28-day study under dermatological supervision with 22 participants (aged 18–65, sensitive and non-sensitive scalp), 1.3 Dixidox de Luxe Peeling reduced keratin build-up on the scalp by 79%. Epidermal exfoliation improved by 67% and scalp sensitivity decreased by 32%. Participants also reported that their hair stayed clean longer, their scalp felt fresh and their hair had more volume.
−79%Keratin build-up on the scalp
+67%Epidermal exfoliation
−32%Scalp sensitivity
22 people · 28 days (± 2 days) · J.S. Hamilton Poland
The studies were conducted and evaluated by independent testing laboratories: J.S. Hamilton Poland Sp. z o.o. (five studies) and YIWI Testing & Evaluation (Shanghai) Co., Ltd. (two studies). Depending on the study, devices such as Corneofix®, Aramo® or Visioscan® were used, partly under dermatological supervision.
When are results visible?
The first measurements in the studies were taken after 28 to 30 days. Most effects on hair loss and hair density were measured after 8 to 12 weeks of regular use.
What does “telogen ratio” mean?
Telogen is the resting phase of the hair, at the end of which it falls out. If the share of hairs in this phase falls, more hairs are in the growth phase.
What is the difference between measured values and the share of participants?
Measured values were recorded with devices, for example hair diameter or the number of shed hairs. The share of participants shows how many people noticed an improvement themselves.
Are the products medicinal products?
No, they are cosmetic products. For severe or sudden hair loss, we recommend seeing a doctor.
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