Alloderm on my Asian nose bridge?

asian, had to take out my L implant that has shifted n made my tip VERY thin. my dr used alloderm to build the bridge and added 1mm extra, in total 5mm since 20% will absorb. is alloderm unpredictable and will it absorb either way? can my bridge look bumpy after a few years? i cant use implant anymore since i have a big hole, septal perforation from another botched job (ear and septal cartilage on tip and bridge 3 years ago)

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