Product gallery study references
Study details behind the figures in Koppā’s product galleries. These published studies used the specific ingredient formulations and methods described below.
GHK-Cu and copper-peptide studies
GHK-Cu serum study (Badenhorst, 2016). At eight weeks, average wrinkle-volume changes were −24.1% with GHK-Cu and its nano-carrier, versus −15.0% with the control. The relevant split-face comparison included 20 women aged 40–65. The control contained neither GHK-Cu nor the nano-carrier, so their separate contributions cannot be determined from this comparison. This was an industry-funded study. Figures on the image are rounded. Read the study.
Copper-peptide cream study (Abdulghani, 1998). Seven of the ten participants receiving the copper-peptide cream showed increased procollagen synthesis after one month, measured using thigh-skin biopsies. This is the proportion of participants showing an increase, not a 70% increase in collagen. Study record.
These findings describe the ingredients in the specific study formulations, concentrations and settings above. Outcomes vary with formulation and use.
Niacinamide studies
4% niacinamide study (Kawada, 2008). In an eight-week split-face study with 30 women enrolled, 64% showed marked or moderate improvement in eye-area wrinkles. This is the share of participants with that assessment, not a 64% reduction in wrinkles. The tested cosmetic contained 4% niacinamide; Koppā Capsule Cream contains 5%. Read the abstract.
5% niacinamide study (Bissett, 2004). A separate twelve-week study involving 50 women compared a 5% niacinamide formulation with its control. The authors reported improvements in fine lines, pigmentation and redness. Read the abstract.
These findings describe the ingredients in the specific study formulations, concentrations and settings above. Outcomes vary with formulation and use.
