I've always been curious and finally found the time to learn about perfume making. I have, however, hit a single, constant problem... Every single time I apply anything I've made I get rewarded with a delightful rash after the second days use. It doesn't matter if it's carrier oil based (coconut, jojoba, sweet almond, apricot) or alcohol (I'm using 95% pure Everclear equivalent). At first I thought it was the Oak Moss Absolute, but even when I exclude that it happens. So far as I am aware I haven't used any prohibited ingredients or exceeded any safe percentages listed on Chris' helpful IFRA Standards thread.
I figure it's probably going to help if I post one of the blends, so here's the one that's just produced a rash today (all measurements are drops):
2 Tonka Bean AB
4 Vanilla co2
1 Sandalwood (India, Santalum Album)
1 Jasmine Sambac
3 Vanilla AB (diluted in alcohol 1:3)
and a dab of Labdanum (<1/2 drop)
in 100 sweet almond oil.
I know it's usually between 5-10% and I'm sitting just under 8%. Aside from base metal allergy (which usually takes weeks to develop due to sweating) I've never been skin sensitive to anything. I use other perfumes (granted, all commercial) without issue including ones with oak moss, am I doing something wrong? All I've noticed is the rash only develops when I get too warm, and then it hangs around for a while (days - one week).
Further, does any one have suggestions for treating the rash? At the moment I'm just applying Elocon (a cortico steroid), aloe vera gel and taking an anti-hystimine.
Thanks for reading! Sorry it's a bit wordy!