You could try the porosity test:

Put some strands of hair (clean with no product) in a bowl full of water (lay them on top of the water). If they sink to the bottom then your hair is highly porous, if they stay in the middle it's "normal", if they float it has low porosity.
20 y/o lifelong natural {4a-O ; spongy ; coarse ; dense ; ~MBL stretched (2 inches from WL)}

products {'poo: TJTTT shampoo | RO: TJTTT Condish | LI/style: TJTTT Condish, SM Manuka Conditioner, homemade cocoa butter cream | DC: condish + ayurvedic powder(s), SM Manuka Mask | PT: condish + NPF | oils: castor oil, grapeseed oil | other treatments: probiotics, tea rinses, AVG rinse/spritz, oil rinse | sealing method: LOCO}

long-term: HL stretched, BSL unstretched

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