we have the same drama here with eye drops - either for infection or for eye tests at hospital (dd2 has alternating converging squint with a few oddities thrown in for good measure) she's six now (has had the squint from about 4 months) and has just got to the point where we don't have to physically hold her down and squeeze them in whilst she is screaming blue murder. when she had a ga two years ago at 4, it took 4 women and the 6 foot male technician to hold her down long enough to get the mask on. she was still screaming when she was 'out'. she also has a phobia of hospital beds, so when she came round from the ga, spent the next 2 hours screaming and trying to crawl out of the bed, and drag the canula out of her foot. in the end they just discharged us, it was much quieter for everyone else. they didn't get a chance to do any obs, they just figured that a child making such an amoutn of noise must be fine.
Yes, you were right. When my Mum was about 10, she fell off her bike on a newly-tarred road and scraped her elbow badly, getting sticky tar in the wound. She was staying with her aunt who didn't have the heart to take a scrubbing brush to her arm to get it all out and, >50 years later, my Mum still has a tarry scar in her elbow.
If there's anything stuck under the skin, magnesium sulphate paste will draw it out - it is about a pound from the chemist, smear it on and put a plaster over the top. It will usually get things out, give it half an hour or so, longer if it is deeper in the skin. Then you can put the antiseptic cream on.
You do need to get it out though, the shouting is not nice but a lot better than an infected wound.
Mag Sulf is best for 'clean' things like splinters. Prob good idea to ask the chemist, I can't see it would hurt an open wound but prob worth checking. Don't think it would work on a scab as it would just reopen the wound?