Skin Antiageing and Systemic Redox Effects of Supplementation with Marine Collagen Peptides and Plant-Derived Antioxidants: A Single-Blind Case-Control Clinical Study

Table 2

Effects of the 2-month food supplement administration on the ultrasonic properties of the dermis ().

Parameter	Dermis
	Pretreatment period	Before treatment	After treatment
Thickness, m	3884 ± 30	3900 ± 31	4133 ± 28
Acoustic density	5.2 ± 0.2	5.1 ± 0.2	6.3 ± 0.1

  versus “before treatment.”