Table 4.

Concentrations (in mg kg⁻¹) of some heavy metals in face powder in Kano.

Metals	Higher price			Lower price
	Mean ± SD	Median	Range	Mean ± SD	Median	Range
Mn	27.45 ± 14.23	29.41	39.22	21.08 ± 11.05	19.61	26.97
Ni	8.09 ± 4.79	11.03	11.03	8.82 ± 4.19	7.35	11.03
Cu	4.24 ± 0.00	4.24	0	6.78 ± 2.32	8.48	4.24
Cd	0.42 ± 0.47	0.35	1.18	0.96 ± 0.57	1.04	1.6
Cr	0.012 ± 0.016	1	0.03	0.00 ± 0.00	0	0
Pb	0.13 ± 0.042	0.14	0.11	0.17 ± 0.12	0.19	0.33