Meoww, no worries!
My shampoo and conditioner both have glycerin in them. I figure most of it washes out, so I don't really worry about it. Most of my styling products have it too, but so far using a leave in with olive oil and no glycerin is working just fine to seal so the glycerin in the styling products isn't frizzing out my hair. It hasn't been weighing down my hair either. I use probably a nickle to quarter sized blob of it. If you use straight oil, start small. lightly coat your hands and run them through your hair like you would with your products. Experiment a bit until you find the right amount for you. There are probably you tube videos on how to seal hair using oil.
Hair Properties: 2A/2B, Medium-fine, Normal porosity, Normal elasticity, Medium density
Low Poo: DevaCare, Yes to Cucumbers
Rinse Out: DevaCare One Condition, Yes to Cucumbers
Cowash: Suave Naturals Lavender
Curl Cream: AG ReCoil, Organix Moroccan Oil Curl Cream
Gel/Mousse: AIF, AIA Curling Jelly, Sweet Elixirs Flax Seed Gel w/ Mag Sulfate added, DevaCurl Frizz Free Foam, Aquage Uplifting Foam
Protein: Spiral Solutions Protein Spray for daily use