Table 3.

Concentrations (in mg kg⁻¹) of some heavy metals in skin lightening creams in Kano.

Metals	Higher price			Lower price
	Mean ± SD	Median	Range	Mean ± SD	Median	Range
Mn	17.65 ± 5.31	14.71	12.25	6.83 ± 1.98	7.35	4.71
Ni	8.09 ± 3.08	7.35	7.35	6.62 ± 4.03	3.68	7.35
Cu	4.24 ± 0.00	4.24	0	5.94 ± 2.32	4.24	4.24
Cd	0.92 ± 0.376	0.76	0.76	0.45 ± 0.43	0.42	1.11
Cr	0.016 ± 0.023	0	0.05	0.00 ± 0.00	0	0
Pb	0.088 ± 0.038	0.1	0.09	0.088 ± 0.038	0.1	0.09