I've really enjoyed reading this thread because quite a number of responses have excellent ideas and I've learnt a few new things too!
I've started C25K as well 😃 (yay running buddy 🏃♀️🏃♀️) and like to do Pop Pilates (YouTube channel) videos on rest days. The trainer on it is really enthusiastic and I really like her workouts.
Like previous posters I also recommend Well Woman vitamins. I take the Original version and think my hair is nicer with them. I'm not sure if it's on atm but Boots do 3 for 2 on them from time to time which is handy.
For nails I've recently discovered Rimmel Gel Effect nail polish. I use a Rimmel base coat/top coat 2 in 1, then the nail polish, then a gel effect top coat. For me this lasts about 5 to 6 days on finger nails and 2 weeks on toe nails. I use the colour grape sorbet, match hands and feet, and this makes me feel like my nails are nicely done. The colour is also neutral in my eyes as a shimmery pink, suitable for work but also looks quite nice when going out or when out and about.
I recommend trying out Vaseline over moisturiser at night time. I have started this based on the recent Vaseline thread and my skin looks better, especially my neck.
My hair is straight and longish and I can't always make it into hairdressers for hair cuts so I've learnt to trim it myself. Superdrug hairdressing scissors and boom.
Use a pumice stone every time you shower, apply some cream (and/or vaseline) or heel balm and cover with socks. Repeat at night time.
I like using eyebrow razors (3 in a pack from Superdrug) when I need to sort out my eyebrows (and get rid of chin hairs!) but don't have the time or right lighting in mornings to tweeze unruly hairs. They are also good for shaping eyebrows.
I also like having a lotion near the sink so that after washing and drying hands so my hands are always soft and moisturised.
I've learnt to do a french braid ponytail and have a couple of other go to hairstyles now for everyday. It took time to do at the start but I practiced before bedtime and random times during the day and can now do heatless niceish hair in 5 minutes or so.
Ogx shampoo and conditioner is lovely. Their argan oil bottle is also nice and keeps my hair smooth. I also use Bleach London hair reincarnation mask every couple of washes and keep it on for around 10 minutes. It makes my hair really shiny and manageable and stops it from looking straw like (my hair has been bleached and coloured a few times).