Compositions comprising dead sea water and polysaccharides and uses thereof as skin protectants

A method for protecting the skin of a subject against at least a secondary one pollutant, the method comprising applying to the skin of said subject a composition comprising as an active combination (i) Dead Sea water;

• and (ii) biosaccharide-4
• wherein said Dead Sea water is a solution having the following composition with salt normality (N) of ±10% of the indicated values:
• Salt normality (N)
• Salt normality (N)
• Na
• 0.118 (2.720 g/l)
• Rb
• 3.5 × 10−6 (<3 × 10−4 g/l)
• K
• 0.054 (2.100 g/l)
• Sb
• <1.6 × 10−7 (<2 × 10−5 g/l)
• Ca
• 0.873 (35.000 g/l)
• Sr
• 7.6 × 10−3 (0.670 g/l)
• Mg
• 3.815 (92.700 g/l)
• V
• <7.9 × 10−5 (<0.004 g/l)
• Ba
• 6.6 × 10−5 (0.009 g/l)
• Th
• <8.6 × 10−8 (<2 × 10−5 g/l)
• Cd
• <1.8 × 10−7 (<2 × 10−5 g/l)
• U
• <8.4 × 10−8 (<2 × 10−5 g/l)
• Co
• <3.4 × 10−5 (<0.002 g/l)
• Zn
• <3.06 × 10−5 (<0.002 g/l)
• Cu
• <3.15 × 10−5 (<0.004 g/l)
• Cl
• 9.75 (346 g/l)
• Cr
• <3.85 × 10−4 (<0.02 g/l)
• Br
• 0.175 (14 g/l)
• Fe
• <3.58 × 10−5 (<0.002 g/l)
• B
• 0.011 (0.120 g/l)
• Li
• 5.76 × 10−3 (0.040 g/l)
• As
• 2.7 × 10−5 (0.002 g/l)
• Mn
• 1.82 × 10−4 (0.010 g/l)
• I
• 6.30 × 10−7 (8 × 10−8 g/l)
• Mo
• <1.04 × 10−6 (<10−4 g/l)
• SiO2
• <3.33 × 10−4 (<0.02 g/l)
• Ni
• <3.4 × 10−5 (<0.002 g/l)
• SiO4
• <2.2 × 10−3 (<0.2 g/l);
• Pb
• <9.6 × 10−8 (<2 × 10−5)
• wherein said secondary pollutant is ozone;
• and
• wherein said active combination synergistically protects the skin of said subject against ozone.