Table 11-6: Overview of dose-response studies and thresholds for eight allergens, after (280).

Study Number of patients ED10 (μg/cm2) 95 % interval
Note: The ED10 value is the concentration which elicits an allergic reaction in 10% of a group of
sensitised individuals under patch test conditions.
MCI/MI 12 1.05 0.17–2.27
Formaldehyde 20 20.1 4.09–43.9
Nickel 1997 24 1.58 0.32–4.04
Nickel 1998 19 0.8 0.078–2.59
Study Number of patients ED10 (μg/cm2) 95 % interval
Nickel 1999 26 7.49 2.42–14.5
Nickel 2005 13 0.74 0.066–2.38
Nickel 2007 20 0.82 0.13–2.37
Cobalt 2005 11 0.44 0.033–1.3
Chromium 17 1.04 0.0033–5.55
Isoeugenol 2001 24 1.48 0.22–4.74
Isoeugenol 2005 13 0.23 0.0073–1.32
HICC 2003 18 0.85 0.062–3.26
HICC 2007 14 1.17 0.043–5.05
HICC 2009 17 0.66 0.052–2.35
MDBGN 2004 19 0.025 0.00021–0.19
MDBGN 2008 18 0.50 0.052–1.69

Table 11-6 presented graphically, after (280).

Source: SCCS,  Opinion on Fragrance allergens in cosmetic products, pages 95-96