64 MARINE INGREDIENTS
14.0 12.0 10.0 8.0 6.0 4.0 2.0 0.0
*** 13.52 10.52
16.0 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0.0
T0 Figure 8: Effect of xPL on skin radiance
indicating its shininess or matte appearance. xPL at 2% significantly increased the radiance of the skin by 31.2% (Figure 8). Digital pictures were acquired using a Visia-CR
(Canfield Scientific) at baseline (D0) and after 28 days (D28). Skin evenness refers to the uniformity of skin colour and texture across the face or other areas of the body. An even skin tone is characterized by a
consistent colour without patches, redness, or discolouration. xPL at 2% significantly improved the evenness of the skin complexion by 5.8% (Figure 9).
Clinical assessments Evaluations were performed by the experimenter using the clinical scores. The positive effect of the product on the evaluated parameter was confirmed if more than 50% of the subjects showed an improvement. xPL at 2% improved skin
TABLE 1: SELF-ASSESSMENT RESULTS No. 01
Items The texture is pleasent 02 My skin is moisturised
03 The product reduces fine lines 04 The product reduces wrinkles
05 The product improves the elasticity of my skin 06 My skin is firmer 07 My skin is smoother 08 My skin looks younger 09 My skin is more radiant 10 11
Skin complexion is more even Skin tone irregularities are less visible
12 My skin tone is unified 13 14
If applicable, the colour of dark spots is reduced The redness is reduced
15 My skin looks healthier 16 17 18 19
No. Items 20 The product improves the overall appearance of the skin PERSONAL CARE MAGAZINE October 2026
The product makes pores less visible If applicable, my eye bags are less visible If applicable, my dark circles are less visible The product has been well tolerated
T28
** 14.872 13.960
T0 Figure 9: Effect of xPL on skin evenness
brightness in 95% of the volunteers at D28. Regarding the skin complexion evenness, 70%
of the volunteers showed improvement when treated with a 2% of xPL at D28. The beneficial effects of xPL on three
volunteer’s face are shown below, demonstrating reduced colour spots and an increase in the skin radiance (Figure 10).
Self-assessment questionnaire Table 1 lists all the results of the self-assessment questionnaires completed at the end of the study (D28) by the enrolled subjects. The data are expressed as the % of subjects who gave the same opinion among those proposed. In summary, the main benefits were found
to be: radiance improvement for 90% of the volunteers; skin complexion that is more even for 100% of the volunteers; and skin that looks healthier for 100% of the volunteers.
Completely agree 80.0% 80.0% 60.0% 35.0% 75.0% 70.0% 80.0% 60.0% 75.0% 65.0% 45.0% 60.0% 50.0% 50.0% 60.0% 65.0% 55.0% 45.0% 90.0%
YES 100.0% Agree
20.0% 20.0% 30.0% 40.0% 25.0% 25.0% 20.0% 35.0% 15.0% 35.0% 40.0% 30.0% 35.0% 45.0% 40.0% 30.0% 25.0% 30.0% 10.0%
NO 0.0% Additional benefits included: fewer visible
pores for 95% of the volunteers; fewer visible eye bags (in 80% of the volunteers) and dark circle (in 75% of the panel); and a remarkable improvement in the ageing signs: fine lines, wrinkles, firmness, elasticity, and reduced appearance of dark spots – with 95% of the panel reporting their skin looks younger.
Discussions and conclusions We have reviewed the interesting properties of an extract from Polysiphonia lanosa (L.)
T.A.Chr., a red alga found, for example, in Brittany, France. It is an epiphyte, growing on the brown alga Ascophyllum nodosum (L.) Le Jol. Polysiphonia lanosa is also a source of
interesting molecules for skincare. The compound 3-Hydroxy-2-(α-D-mannopyranosyloxy)- propanoic acid, also known as digeneaside, is a particular acidic carbohydrate that was identified
Disagree 0.0% 0.0% 10.0% 25.0% 0.0% 5.0% 0.0% 5.0%
10.0% 0.0% 15.0% 10.0% 15.0% 5.0% 0.0% 5.0%
20.0% 25.0% 0.0%
- -
Completely disagree 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
- -
Positive answers 100.0% 100.0% 90.0% 75.0%
100.0% 95.0%
100.0% 95.0% 90.0% 100.0% 85.0% 90.0% 85.0% 95.0%
100.0% 95.0% 80.0% 75.0%
100.0%
Positive answers 100.0%
www.personalcaremagazine.com
T28
Skin radiance (a.u.)
Skin evenness complexion (standard deviation)
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