A lot of this depends on your personal situation. The following is what I take.
Dental: small travel toothbrush, dental floss (Crest Glide threader floss for cleaning bridgework), baking soda (dentist recommended). The floss is removed from its individual envelopes and put into a small plastic bag. Floss doubles as sewing thread and baking soda is useful for various medicinal purposes. I've spent too many thousands of $$$$ on dental work to stint on dental hygiene!
Sunblock--in tiny dropper bottle (I keep covered up so I don't need much)
Hand sanitizer--either in tiny dropper bottle or sample bottle, depending on length of trip. Because of the effect of even tiny quantities of soap on aquatic life, I will not take soap.
Lotion, unscented--also in tiny dropper bottle. I use just a few drops massaged around each fingernail twice daily. If I don't use it, I get horrible hangnails which inevitably get infected.
Body Glide (for feet), repackaged in small plastic bag.
Lip balm--I really like the Burt's Bees stuff, although I do worry about bears being attracted to the beeswax.
If my hair were longer (I keep it quite short), I would take a small pocket comb. I wear a hat most of the time when backpacking. Back in the days when I had long hair, I took a pocket comb and combed out and rebraided my hair daily. My mother used to French braid hers, but I never mastered that skill. I do take a comb for my dog (to lessen the amount of dog hair and eliminate possible creepy-crawlies from the tent), which he carries in his doggie pack.
For the thick liquids (sunscreen, lotion), I remove the little dropper insert from the dropper bottle.
I take one and a half "Handi-Wipes" (semi-disposable towels found in a package at the supermarket) which usually last me a season. They are lighter and dry several times faster than those expensive pack towels and are just as absorbent. The half-towel is my washrag/dishrag and the whole one is my towel/dishtowel. I like to sponge off hands, face, neck, ears and body areas most likely to sweat each night at bedtime.
The controversial (on this forum) subject of TP: Because of medical conditions, I take, per day, three paper towel rectangles (11"x6") (far more absorbent than TP) and one unscented diaper wipe for cleansing of the nether regions. Needless to say, I pack out the used items. We women need to be extra careful here, especially those of us prone to infections. As for me, I absolutely won't pluck any green vegetation in fragile alpine areas, and if I tried to use rocks or pine cones I'd end up in the hospital!
I include all this stuff in base weight except the TP and a couple other items I need for the nether regions. Those are the only ones that vary enough from trip to trip to be worth recording as consumables, or, as I prefer to call it, "variable weight." (That's my accounting background coming to the fore.) I just eyeball to make sure I have enough in the little bottles for the trip, and the total difference between a 3-dayer and a 7-dayer might be 0.3 ounce.