When you travel and stay in a hotel, don't leave the (courtesy) bags of coffee and tea in the hotel rooms. Take them and use them to make your hair tea rinses. :wink2:
If you must buy an expensive product, use a sliding scale: the longer it will be on your hair, the more it can cost. Co-washes that cost fifty cents can be just as effective as those that cost 100x that.
Don't throw the empty glass jars (with lids) of tomato sauce, gravies, etc. away. Sterilize them to use as storage containers for rinses, oils and other DIY hair concoctions.
Next time at a Japanese/chinese restaurant - save the chopsticks. Bring them home to use as stirrers for DIY concoctions (metal utensils should be avoided)
Use old striped shirts for length checks. Mark hair lengths(SL, APL, BSB, BSL, MBL, etc), and dates when you achieve lengths on the shirt with a Sharpie.
Do a hot oil treatment in which you massage the warm oil into your scalp at least twice a week for faster hair growth. Coat your hair in the oil from root to tip focusing on the ends. Put your hair in a bun or braid and wash it out the next day.
Hair care is 80% technique and 20% hair products. Don't get caught up in buying all these expensive products if you haven't mastered the techniques yet.
Aloe Vera Gel is the "bomb.com" Is a great moisturizer (Hydrates) for hair w/o buildup; provides great slippage when styling/detangleling , and is a great semi-gel.
IMHO it is a good idea to clarify your hair BEFORE trying a new product or regimen; doing so will enable you better assess the efficiency of your new products/regimen.
Don't search for a hair twin for the express purpose of building a suitable regimen; just because your hair looks like someone else's doesn't mean it will respond the same way to products or routines.
If your fine hair loves protein, use it in various forms as often as your hair can can tolerate it to help retain length; especially if you perform heat styling and high manipulation styles regularly.
If you absolutely don't feel like doing your hair, save yourself the mechanical damage & don't. Find yourself a quick, easy, "save me from a bad hair day" style & rock it out till you have the energy & desire to tackle your tresses.